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.