The Abyss Lake Trail is a popular hiking trail that ends at Abyss Lake. The lake is nestled in a high glacial cirque between Mt. Bierstadt and Mt. Evans. The elevation gain, together with the round trip distance of almost 17 miles makes this a strenuous day hike.

• 8.3 miles
• Bailey, CO

Alderfer / Three Sisters Medley is a 5.9 mile loop trail located near Conifer, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from April until October.

• 5.9 miles
• Conifer, CO

Anne U. White Trail is a 3.3 mile out and back trail located near Boulder, Colorado that features a waterfall and is good for all skill levels. The trail is primarily used for hiking & trail running and is accessible year-round. Dogs are also able to use this trail.

• 3.3 miles
• Boulder, CO

Apex Gulch Loop is a 4.2 mile loop trail located near Golden, Colorado and is rated as difficult. The trail is primarily used for hiking, mountain biking & trail running and is accessible from April until October.

• 4.2 miles
• Golden, CO

Apex Loop is a 5.1 mile loop trail located near Littleton, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from March until November.

• 5.1 miles
• Littleton, CO

This is a beautiful and popular trail in the Golden, CO area. Be sure to read the sign and map at the trail head because the trail is on an alternating use schedule to accommodate the large number of hikers and bikers. The trail is part of an excellent network of trails in the Apex Park.

• 7 miles
• Golden, CO

Baldy Trail to Gashouse Gulch Trail is a 7.7 mile loop trail located near Pine, Colorado and is good for all skill levels. The trail is primarily used for hiking, mountain biking & trail running and is accessible from May until October.

• 7.7 miles
• Pine, CO

Bear Creek Lake Trail Loop is a 8 mile loop trail located near Morrison, Colorado that features a lake and is good for all skill levels. The trail offers a number of activity options and is accessible from April until October. Dogs are also able to use this trail but must be kept on leash.

• 8 miles
• Morrison, CO

Bergen Peak is a 11.2 mile out and back trail located near Evergreen, Colorado that features a great forest setting. The trail is rated as difficult and primarily used for hiking, mountain biking, trail running & walking. Dogs are also able to use this trail but must be kept on leash.

• 11.2 miles
• Evergreen, CO

Bergen Peak Loop is a 8.2 mile loop trail located near Evergreen, Colorado that features a great forest setting and is rated as moderate. The trail is primarily used for hiking, mountain biking, trail running & walking and is accessible from April until October. Dogs are also able to use this trail but must be kept on leash.

• 8.2 miles
• Evergreen, CO

Betasso Preserve Trail is a 3.4 mile loop trail located near Boulder, Colorado, and is good for all skill levels. The trail is primarily used for hiking, trail running and mountain biking and is accessible from March until November. It also has an education outreach center.

• 3.4 miles
• Boulder, CO

Big Dry Creek trail. north is a 10.00 mile trail located near Denver, Colorado. The trail is good for all skill levels and primarily used for mountain biking. At one end is Standley Lake, and the other is a trailhead just off of I-25.

• 10 miles
• Denver, CO

Easy walk around The Pinery Lake.

• 1 miles
• Parker, CO

Open sunrise to sunset everyday, Bluff Lake is a wonderful place to visit to get some peace and quiet in the city. This special place is protected for our wildlife inhabitants and visiting human neighbors, so please, no dogs or bicycles, and don't forget your insect repellent.

• 1 miles
• Denver, CO

Bluffs Park Loop is a 2.7 mile loop trail located near Elizabeth, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 2.7 miles
• Elizabeth, CO

Great views of the Colorado Front Range mountains, the Denver metro area, and grassland vegetation and wildlife.

• 2.7 miles
• Lone Tree, CO

Buck Gulch Loop is a 7.6 mile loop trail located near Sedalia, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from March until November.

• 7.6 miles
• Sedalia, CO

Castlewood Canyon Trail is a 2.4 mile out and back trail located near Franktown, Colorado that features a lake and is rated as moderate. The trail offers a number of activity options and is accessible year-round.

• 2.4 miles
• Franktown, CO

Carpenter Peak Trail is a 6.4 mile out and back trail located near Littleton, Colorado that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking & trail running and is accessible from March until November.

• 6.4 miles
• Littleton, CO

Castlewood Canyon Loop is a 6.7 mile loop trail located near Elbert, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from March until November.

• 6.7 miles
• Elbert, CO

Centennial Cone Trail is a 16 mile loop trail located near Golden, Colorado that features a river and is rated as moderate. The trail is primarily used for hiking, mountain biking & trail running and is accessible from February until November. Dogs are also able to use this trail but must be kept on leash.

• 16 miles
• Golden, CO

Nice wide trail on the North End of Mueller State Park near Divide, Colorado. This is a 5.5 mile loop which allows horses, mountain bikes, and hikers. Lots of wildlife viewing opportunities particularly in the early morning and evening hours.

• 5.5 miles
• Divide, CO

Colorado / Green Mountain Trails is a 13.9 mile loop trail located near Sedalia, Colorado and is rated as difficult. The trail is primarily used for trail running and is accessible from May until October.

• 13.9 miles
• Sedalia, CO

Community Ditch is a 10.8 mile out and back trail located near Boulder, Colorado. The trail is good for all skill levels and primarily used for mountain biking & trail running.

• 10.8 miles
• Boulder, CO

Community Ditch Trail is a 8.1 mile out and back trail located near Littleton, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 8.1 miles
• Littleton, CO

Coot Lake Trail is a 1.2 mile loop trail located near Longmont, Colorado that features a lake. The trail is good for all skill levels offers a number of activity options. Dogs are also able to use this trail.

• 1.2 miles
• Longmont, CO

Coyote Song Trail is a 4.6 mile loop trail located near Littleton, Colorado and is good for all skill levels. The trail is primarily used for hiking, mountain biking & trail running and is accessible from March until November. Dogs are also able to use this trail but must be kept on leash.

• 4.6 miles
• Littleton, CO

Dakota Ridge Trail is a 6.5 mile loop trail located near Lakewood, Colorado that offers scenic views. It is possible to link to Matthew Winters/Red Rocks trails to create a longer loop. The trail is primarily used for hiking and is accessible year-round.

• 6.5 miles
• Morrison, CO

Denver County: Kipling and Belleview is a 0.7 mile out and back trail located near Littleton, Colorado that features a lake and is good for all skill levels. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

• 0.7 miles
• Littleton, CO

Devils Thumb Lake Trail is a 10.9 mile out and back trail located near Nederland, Colorado that features a lake and is rated as moderate. The trail is primarily used for fly fishing, hiking & trail running and is accessible from July until September.

• 10.9 miles
• Nederland, CO

Doudy Draw Trail is a 1.7 mile loop trail located near Boulder, Colorado that features a river and is good for all skill levels. The trail is primarily used for hiking, mountain biking & trail running and is accessible year-round. Dogs are also able to use this trail but must be on leash.

• 1.7 miles
• Boulder, CO

Eagle / Sage Loop is a 5.6 mile loop trail located near Boulder, Colorado. The trail is good for all skill levels and primarily used for trail running.

• 5.6 miles
• Boulder, CO

East Plum Creek trail is a 8-foot wide paved trail that runs along the East Plum Creek in Castle Rock. The trail is a 12 mile out and back and is accessible year-round.

• 12 miles
• Castle Rock, CO

Elk Meadow is a 4 mile loop trail located near Evergreen, Colorado that features beautiful wild flowers. The trail is good for all skill levels offers a number of activity options. Dogs are also able to use this trail but must be kept on leash.

• 4 miles
• Evergreen, CO

Elk Meadow Loop is a 5.7 mile loop trail located near Conifer, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible from April until October.

• 5.7 miles
• Conifer, CO

medicine bow Peak is a 11.3 mile out and back trail located near Evergreen, Colorado and is rated as difficult. The trail is primarily used for hiking, mountain biking & trail running and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

• 11.3 miles
• Evergreen, CO

Enchanted Mesa Medley is a 3.6 mile loop trail located near Littleton, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 3.6 miles
• Littleton, CO

Fairgrounds Lake is a loop trail located near Longmont, Colorado that features beautiful wild flowers. The trail is good for all skill levels and primarily used for trail running. Dogs are also able to use this trail but must be kept on leash.

• Longmont, CO

First Flatiron Trail is a 2.9 mile out and back trail located in Chautauqua Park near Boulder, Colorado and is rated as difficult. The trail is primarily used for hiking & trail running and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

• 2.9 miles
• Boulder, CO

Foothills Trail Extension is a 4.6 mile out and back trail located near Boulder, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 4.6 miles
• Boulder, CO

Glacier Lake Road is a 10.8 mile out and back trail located near Boulder, Colorado and is rated as moderate. The trail is primarily used for mountain biking & trail running and is accessible from May until October.

• 10.8 miles
• Boulder, CO

Golden Gate Canyon Loop is a 8.1 mile loop trail located near Golden, Colorado that features beautiful wild flowers and is rated as moderate. The trail is primarily used for camping, hiking & trail running and is accessible from May until October.

• 8.1 miles
• Golden, CO

Golden Gate State Park Loop is a 8.2 mile loop trail located near Golden, Colorado that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round.

• 8.2 miles
• Golden, CO

A popular peak hike providing views of the Indian Peaks and Boulder

• 6.2 miles
• Boulder, CO

Connects High Plains to Marshall Mesa trail system.

• 1.6 miles
• Boulder, CO

Hall Ranch Loop is a 9.5 mile loop trail located near Longmont, Colorado. The trail is rated as moderate and primarily used for trail running.

• 9.5 miles
• Longmont, CO

With more than 2,400 acres of open space, William Frederick Hayden Park on Green Mountain is the second largest park in the city of Lakewood, Colorado.

• 7 miles
• Golden, CO

Heil Ranch is a 7.7 mile out and back trail located near Longmont, Colorado. The trail is rated as moderate and primarily used for trail running.

• 7.7 miles
• Longmont, CO

High Line Canal is a 28.6 mile out and back trail located near Sedalia, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 28.6 miles
• Sedalia, CO

Hildebrand Ranch is a 5 mile loop trail located near Littleton, Colorado that offers the chance to see wildlife and is good for all skill levels. The trail is primarily used for hiking, mountain biking & trail running and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

• 5 miles
• Littleton, CO

Hogback Loop is a 2.8 mile loop trail located near Boulder, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 2.8 miles
• Boulder, CO

Jasper Lake Trail is a 10 mile out and back trail located near Nederland, Colorado that features a lake. The trail is rated as moderate offers a number of activity options. Dogs are also able to use this trail but must be kept on leash.

• 10 miles
• Nederland, CO

Lair to Pence Connector Trail is a 12.2 mile point-to-point trail located near Sedalia, Colorado and is rated as difficult. The trail is primarily used for trail running and is accessible from March until November.

• 12.2 miles
• Sedalia, CO

Legault Mountain is a minor peak about 25 miles southwest of Denver. The short hike to the summit involves merely 1200 feet of elevation gain over a horizontal distance of around 3.5 miles.

• 3.5 miles
• Conifer, CO

Lower Barr Trail is a 6.4 mile out and back trail located near Manitou Springs, Colorado that offers the chance to see wildlife and is rated as difficult. The trail is primarily used for hiking & trail running and is accessible from April until October.

• 6.4 miles
• Manitou Springs, CO

This is a mixed-use trail, part of Jefferson County Open Space. Pay attention to the maps and signs for what is allowed on which days. There is plenty of parking at the trail head, and rest rooms, along with access to Clear Creek.

• 4 miles
• Golden, CO

Great out and back route.

• 7.48 miles
• Divide, CO

Mesa Trail is a 13.40 mile loop trail located near Boulder, Colorado, and is rated as moderate. The trail is primarily used for hiking.

• 13.4 miles
• Boulder, CO

Meyer Ranch Loop is a 4.3 mile loop trail located near Sedalia, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible from April until October.

• 4.3 miles
• Sedalia, CO

Meyers Homestead Trail is a 5.2 mile out and back trail located near Boulder Colorado and is good for all skill levels. The trail is primarily used for hiking & trail running and is accessible from March until November.

• 5.2 miles
• Boulder, CO

Meyers Ranch is a 4.7 mile loop trail located near Morrison, Colorado that features a great forest setting. The trail is primarily used for hiking, mountain biking & trail running and is accessible from April until October. Dogs are also able to use this trail but must be kept on leash.

• 4.7 miles
• Morrison, CO

Mount Bierstadt is a 6 mile trail located near Idaho Springs, Colorado. The trail is primarily used for hiking and is one of Colorados most accessible 14ers.

• 6 miles
• Idaho Springs, CO

Mount Falcon is a 1.3 mile out and back trail located near Indian Hills, Colorado that offers scenic views and is good for all skill levels. The trail is primarily used for hiking, mountain biking & trail running and is accessible from April until November.

• 1.3 miles
• Indian Hills, CO

Starts climbing immediately through gorgeous miles of switch backs.

• 5.82 miles
• Morrison, CO

Mount Falcon Loop is a 10.2 mile loop trail located near Morrison, Colorado and is rated as difficult. The trail is primarily used for trail running and is accessible from April until October.

• 10.2 miles
• Morrison, CO

Mount Galbraith Loop is a 4 mile loop trail located near Golden, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from March until November.

• 4 miles
• Golden, CO

Mount Sanitas / Dakota Ridge is a 3.2 mile loop trail located near Boulder, Colorado and is rated as difficult. The trail is primarily used for hiking & trail running and is accessible year-round. Dogs are also able to use this trail.

• 3.2 miles
• Boulder, CO

Mt. Audubon Trail is a 4 mile out and back trail located in the state of Colorado that features a lake and is rated as moderate. The trail is primarily used for hiking & trail running and is accessible from June until September. Dogs are also able to use this trail but must be kept on leash.

• 4 miles
• Nederland, CO

Shanahan Trail can be taken to either the North Fork or South Fork of the Shanahan through ponderosa pine savannah. Both trails intersect with the Mesa Trail. Bear Canyon Trail also accesses the Mesa Trail through the NCAR (National Center for Atmospheric Research) property.

• 3.3 miles
• Boulder, CO

North Table Mountain Park is a 15 mile loop trail located near Golden, Colorado that offers the chance to see wildlife and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

• 15 miles
• Golden, CO

Easy to moderate trail with some inclines.

• 4 miles
• Calhan, CO

Palmer Lake Reservors is an out and back trail located near Monument, Colorado that features a lake and is good for all skill levels. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

• Monument, CO

Palmer Trail is a loop trail located near Manitou Springs that offers the chance to see wildlife and is rated as moderate. The trail is primarily used for hiking, mountain biking, trail running & walking and is accessible from August until December. Dogs and horses are also able to use this trail.

• 5.5 miles
• Manitou Springs, CO

Pella Crossing Trail is a 3 mile loop trail located near Longmont, Colorado that features a lake. The trail is good for all skill levels offers a number of activity options. Dogs are also able to use this trail but must be kept on leash.

• 3 miles
• Longmont, CO

Pick N Sledge is a 1.6 mile point-to-point trail located near Golden, Colorado that offers the chance to see wildlife and is rated as moderate. The trail is primarily used for hiking, mountain biking & trail running and is accessible year-round.

• 1.6 miles
• Golden, CO

The 28.5-mile trail made of asphalt, cinder, and concrete follows the winding Platte River, coursing through Denver's urban landscape.

• 28.5 miles
• Denver, CO

Plymouth Mountain Trail is a 5.7 mile loop trail located near Sedalia, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from March until November.

• 5.7 miles
• Sedalia, CO

Rabbit Mountain is a 5.6 mile loop trail located near Longmont, Colorado that features beautiful wild flowers. The trail is rated as moderate offers a number of activity options. Dogs are also able to use this trail but must be kept on leash.

• 5.6 miles
• Longmont, CO

Absolutely gorgeous loop leads through fields and forests, beautiful vistas and excellent elevation. There is an old private cabin along the route and an easy trail back to Revends Run Campground.

• 2.5 miles
• Black Hawk, CO

This trail has a beginning and end it is about 6.97 miles if you do my little turn around. If you just take the middle section and loop north and follow my race track track you will have a nice ride

• 7 miles
• Lake George, CO

Rattlesnake Gulch Trail is a 4.7 mile loop trail located near Littleton, Colorado and is rated as moderate. The trail is primarily used for hiking & trail running and is accessible from March until November.

• 4.7 miles
• Littleton, CO

Red Mesa Loop is a 2.5 mile loop trail located near Sedalia, Colorado and is rated as moderate. The trail is primarily used for hiking & trail running and is accessible from March until November.

• 2.5 miles
• Sedalia, CO

Red Rocks / Dakota Ridge Loop is a 5.9 mile loop trail located near Morrison, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible year-round.

• 5.9 miles
• Morrison, CO

Reynolds Park Loop is a 5.3 mile loop trail located near Sedalia, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible from March until October.

• 5.3 miles
• Sedalia, CO

Ridgeline Open Space is a 8.0 mile trail located near Castle Rock, Colorado. The trail is rated as moderate and primarily used for hiking & snowshoeing.

• 8 miles
• Castle Rock, CO

Visitors can climb this historic landmark through a looped single-track trail system. From these trails, hikers can reach the base of the Rock and are afforded panoramic views of Downtown Castle Rock, the I-25 corridor, Pikes Peak and the Front Range. This hike offers rocky and uneven terrain.

• 1.4 miles
• Castle Rock, CO

Roxborough Park Medley is a 5.1 mile loop trail located near Sedalia, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible year-round.

• 5.1 miles
• Sedalia, CO

Royal Arch Trail is a 3.2 mile out and back trail located near Boulder, Colorado that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking, mountain biking, trail running & walking and is accessible from May until November. Dogs and horses are also able to use this trail.

• 3.2 miles
• Boulder, CO

Shadow Mountain Loop is a 4 mile loop trail located near Sedalia, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible from April until October.

• 4 miles
• Sedalia, CO

Shadow Pines Loop is a 2.8 mile loop trail located near Conifer, Colorado that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible from April until October. Dogs are also able to use this trail but must be kept on leash.

• 2.8 miles
• Conifer, CO

Easy trail takes you up through the open space along Shanahan Ridge. A North and South Fork allows for loops of various length. The trail system intersects with South Mesa Trail and provides access to the Shadow Canyon and Fern Gulch trails to Bear and South Boulder Peaks.

• 2.09 miles
• Boulder, CO

Silver Dollar Lake Trail is a 1.5 mile out and back trail located near Idaho Springs, Colorado that features a lake and is rated as moderate. The trail offers a number of activity options and is accessible from June until September. Dogs are also able to use this trail.

• 1.5 miles
• Idaho Springs, CO

Sourdough Trail is a 12 mile out and back trail located near Boulder, Colorado that features a river and is rated as difficult. The trail is primarily used for mountain biking & trail running and is accessible from June until September.

• 12 miles
• Boulder, CO

South Table Mountain is a 9.7 mile loop trail located near Golden, Colorado. The trail is primarily used for hiking, mountain biking & trail running and is accessible year-round.

• 9.7 miles
• Golden, CO

South Valley Park Medley is a 6.2 mile loop trail located near Sedalia, Colorado and is good for all skill levels. The trail is primarily used for trail running and is accessible from March until November.

• 6.2 miles
• Sedalia, CO

Beautiful

• 1.5 miles
• Idaho Springs, CO

Teller Farms Trails is a 12 mile out and back trail located near Lafayette, Colorado and is rated as moderate. The trail is primarily used for trail running and is accessible year-round.

• 12 miles
• Lafayette, CO

tenderfoot is a 1.9 mile trail located near Highlands Ranch, Colorado. The trail is primarily used for mountain biking & trail running.

• 1.9 miles
• Highlands Ranch, CO

Tenderfoot Trail is a 2.1 mile loop trail located near Boulder, Colorado that offers the chance to see wildlife. The trail is rated as moderate and primarily used for hiking, trail running & walking. Dogs are also able to use this trail.

• 2.1 miles
• Boulder, CO

Small walk along the creek is very pretty, mostly pathed little jaunt at the base of lookout mountain.

• 1 miles
• Golden, CO

Point-to-point over the top of Mt. Falcon with an observation tower at the top.

• 0.68 miles
• Morrison, CO

Waterton Wayfarer is a 6.2 mile out and back trail located near Denver, Colorado that features a river. The trail offers a number of activity options.

• 6.2 miles
• Denver, CO

6.3 mile long rail-trail paved with concrete for biking or running.

• 6.3 miles
• Denver, CO

White Ranch is a 10.4 mile trail located near Golden, Colorado. The trail is primarily used for mountain biking. Dogs on leash are welcome.

• 10.4 miles
• Golden, CO

White Ranch Loop is a 14.6 mile loop trail located near Golden, Colorado that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs and horses are also able to use this trail.

• 14.6 miles
• Golden, CO

White Rocks Section of the East Boulder Trail is a 4.4 mile out and back trail located near Boulder, Colorado and is good for all skill levels. The trail is primarily used for hiking, mountain biking & trail running and is accessible year round. Dogs and horses are also able to use this trail.

• 4.4 miles
• Boulder, CO

Quiet mountain trail. Free roam cattle in the summer. Elk roam. Very private. Great views of Pikes Peak.

• 5.24 miles
• Divide, CO

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