Rocky Mountain Triathlon Club

For over 15 years, the RMTC has grown into one of the largest triathlon clubs in the US and currently has over 500 active members. They are a non-profit club, run by its members for its members.

phidippides track club

Phidippides Track Club is one of Denver’s oldest running clubs and the only one dedicated to track-specific training for runners and fitness enthusiasts of all ages and abilities. We provide scheduled interval track workouts and social activities to improve the knowledge and enjoyment of running and training.

revolution running

Revolution Running is a running community. A training club for all abilities, ​who want to improve, meet others and have fun in a coached group training environment.

rocky mountain road runners

Rocky Mountain Road Runners is a volunteer-driven running community that provides our members and guests monthly races and year-round training opportunities.  Our monthly Trophy Series races give you an inexpensive way to race your running friends, and our track and marathon training programs help you build your fitness and get ready for that goal race you’ve had in mind.

team evergreen

Founded in 1988 in Evergreen, Colorado, Team Evergreen is a non-profit organization and the largest bike club in the state of Colorado. In the past 18 years, we have given nearly $2.6 million to local non-profits and advocacy groups. Join us for weekly rides, trips, and events throughout the year.

team cycleton

Join the men and women of Team Cycleton and beyond for a fun and fast paced road ride every weekend! They ride in the rain, snow or sun so bring your road bike, wear your appropriate gear and join them every Saturday morning at 8am. 45+ mile race pace loop averaging 22 mph. Meet at Cycleton Stapleton. 

find races


Volunteering is a great way to give back to the sport you love. I support Racing Underground as much as I can by volunteering at their events. Racing Underground organizes some of the best triathlons, duathlons, and running events in Colorado. If you are new to the sport and money is tight, feel free to contact Jill for volunteer opportunities. In many cases, she will comp your entry if you volunteer at one of their events. It’s a great trade-off if you plan on doing a lot of racing like me. 

Another great Colorado group that organizes awesome events is Without Limits! I believe they have the same trade option. Work a race and race for free. 

If your looking for a trail or road race then Stridemob is a good option. They have a series of events throughout the year and are always looking for volunteers.