Are you Ninja? Come bring out your inner ninja at the 5th Annual Ninja Challenge Obstacle 5k race on May 21st. With more than 15 obstacles from throwing stars to running across water to push your your strength, balance, dexterity, and stamina, this race is your chance to claim ultimate ninja stats - plus it's a ton of fun. Stick around for the after-party, complete with music, food, beer, and live demos from a ninja school. Proceeds benefit the Triangle Aquatic Center and the Triangle Area Red Cross to help bring awareness to the importance of water safety.