Saturday October 7th and Sunday, October 8th @ Flat Rock Ranch: Test your endurance and multi-sport skills with the first of Spectrum's two multi-day, multi-sport running and mountain biking challenges, presented by Chumba Cycles USA and Karbach Brewing. Rawhide is the second of our trail series and takes place on one of the best trails in Texas - Flat Rock Ranch. Think: rugged, steep, and rocky - just don't think flat. Imagine the most serene of hill country ranches and top that off with running, dancing, and relaxing under the stars. With a huge field for our start/finish, this is an ideal place to bring your family and friends to cheer you on and celebrate your accomplishments when you finish!