Colorado at its Best – the Carbon Valley Half Marathon will showcase the beauty & diversity of Colorado’s best kept secret. Small town charm with Big City services, Firestone & Frederick are the perfect host for this 13.1 mile adventure. From Start to Finish, runners will tread upon Mining Town history via manicured trail systems, dirt paths & rural roads. Firestone’s Central Park & the Firestone Trail are featured as well as running the rim of Frederick’s gorgeous Milevac Lake. The entire course has spectacular views of the Rockies. Participants are asked to raise funds for Autism Research. Our goal is to attract 700 participants our 2nd Annual races and raise at least $25,000 benefiting Children’s Hospital Colorado and research thru the Autism Treatment Network.