Colorado at its Best – the Carbon Valley Half Marathon showcases the beauty & diversity of Colorado’s best kept secret.  Small town charm with Big City services, nestled between Denver & Fort Collins, Firestone &Frederick host these 13.1 mile & 5K adventures. Runners tread upon Mining Town history via manicured trail systems, dirt paths &rural roads, bridges & tunnels.  The Firestone Trail, Frederick’s gorgeous Milevac Lake & Charming Downtown are some highlights.  The entire course has spectacular views of the Rockies and a 2 Mile Downhill FAST FINISH.  Also offered is a Relay, & FUN RUN!