Welcome to Racing Colorado Online!

Your complete source for Colorado race calendars, information, and entry forms for running, cycling (road bike and mountain bike), triathlon / multisport, and Nordic sports. Find a race to set a new PR or an event to entertain the family! Just browse the calendars to find event details, entry forms, links to race sites, and registration information. One online source for your complete running calendar, cycling calendar, triathlon calendar (including other multisport races) and Nordic event calendar.

Teva Mountain Games The country's largest celebration of mountain sport returns to Vail! Professional and amateur outdoor adventure athletes compete in any of ten disciplines including: kayaking, climbing, mountain bike, and road racing, as well as trail running, and the GNC Ultimate Mountain Challenge..

Highline Hustle Sprint Triathlon An annual Grand Junction triathlon, great for both beginners and competitive triathletes alike. A true open water swim, out & back bike, and a trail run over rolling terrain. Come to race or cheer on a hustler!

Park City Marathon This course takes runners from picturesque farms and meadows into charming Old Town Park City, across a skier bridge and along quiet residential streets and smooth, wide gravel paths. Wrap it up with a fast downhill finish!

Steamboat Springs Running Series The Steamboat Springs Running Series includes a variety of challenging and fun runs from 400 yards to 26 miles over some of Colorado's most spectacular terrain! Run through snow, creeks, over rocks, up ski hills, and more.

Estes Park Marathon This USATF certified marathon course takes you on a spirit-soaring tour of the majestic Estes Valley, gateway to Rocky Mountain National Park. We also offer a Half Marathon the Optimists 10K and 5K, and a KIDS FUN RUN! in conjunction with YMCA of the Rockies. A running event for everyone!

Run The Rock Mountain running at its best... Jeep trails through the pines and aspens at Beaver Ranch, followed by live music and disc golf!

St. Joseph Hospital Foundation Stadium Stampede 5K A fun, family event. The Stadium Stampede features a 5K run/walk, a 1K kids run, and 1K Senior Challenge. Events pass through INVESCO Field at Mile High and runners can see themselves on Thundervision. The post-party features live music, bungee jumping, clowns, food, beer & more!