Event details subject to change. Please confirm all information via event website.
PPRR Nielson Challenge
North Monument Valley Park 1794 Culebra Ave., Colorado Springs, CO, United StatesRace Format The first time you run this event, you'll establish a base time for yourself. This base time is used to generate a handicap time. The handicap time is calculated using an algorithm developed by Bob Royse, and it's geared to favor a beginning runner and the slower runners. Click here for an explanation of the […]
5K Fun Run of Red Feather Lakes
The Tavern at Red Feather Lakes 1078 Ramona Dr, Red Feather Lakes, CO, United StatesEnjoy a scenic fun run in and around Red Feather Lakes, Colorado including a route through Fox Acres Golf Course! Start in the village and end at The Tavern at Red Feather Lakes for a beer, an expo and great food and company! This is an untimed race.
Sheep Creek Triathlon
Sheep Creek Front Gate 731 River Run Dr., Antonito, CO, United StatesPlease join us on Saturday, July 5, 2025 for a morning filled with family fun! Sheep Creek will be hosting a fun "triathlon" as part of our 4th of July festivities. This isn't your typical triathlon... participants will go on a 1 mile walk/jog from the Sheep Creek front gate to the Eanes' cabin, play […]
Gold Roots Trail Series #2
Courtney Ryley Cooper Park 2350 Colorado Blvd, Idaho Springs, CO, United StatesRun the Mighty ARGO hill this summer in a 4 race series! You will have the option of a short loop (~5 miles, ~750' gain) or a long loop (~9 miles, ~1400' gain). Both loops climb the Rosa Gulch trail and come down Virginia Canyon. Start and end in Courtney Ryley Cooper Park. Routes subject […]
Hardrock 100 Endurance Run
Memorial Park - Silverton 1800 Greene St, Silverton, CO, United StatesAbout The Run The Hardrock Hundred Mile Endurance Run is an ultramarathon of 100.5 miles in length, plus 33,050 feet of climb and 33,050 feet of descent for a total elevation change of 66,100 feet, at an average elevation of over 11,000 feet. The run is held on a loop course on 4WD roads, dirt […]
Frisco Triathlon
Frisco Bay Marina 267 Marina Road, Frisco, CO, United StatesAre you looking for a new challenge this summer? Register for the annual Frisco Triathlon featuring stand-up-paddle boarding, mountain biking, and trail running. This twist on a triathlon is open to all ability levels and encourages athletes to take on a new multi-sport event. The Frisco Triathlon was named “Best Triathlon” in Elevation Outdoors Magazine’s […]
Chase the Moon Trail Race
Mountain Vista High School 10585 Mountain Vista Ridge, Highlands Ranch, CO, United StatesChase the Moon is a 12-hour team relay and solo ultramarathon, run overnight under the light of the full moon in the Highlands Ranch Backcountry trail system (we promise some of the best views of the metro and front range). Run as a solo ultrarunner, or get your fellow moon-chasing friends for a 3-person or […]
Silver Rush 50 Mile
Leadville 124 E. Sixth Street, Leadville, CO, United StatesTake on 50 miles of extreme territory that starts at 10,200 feet and reaches 12,000 feet on four separate occasions at the Silver Rush 50 Run. It will leave your lungs burning, heart pounding and eyes completely amazed — while also preparing you for the pinnacle Leadville Trail 100 Run presented by La Sportiva. New […]
All-Out Dog Days
Church Ranch Office Park 10170 Church Ranch Wy, Westminster, CO, United StatesGet ready for some fun in the sun and a great mid-season test of your training as we bring our 11th Annual Dog Days 5K, 10K & Half Marathon! Centrally located between Denver & Boulder along with its Endless Series sidekick in December Fa La La, the beauty of our breathtaking Flatirons as a backdrop will inspire you […]
LG Triathlon
Siena at Brightwater 1000 Brightwater Club Drive, Gypsym, CO, United StatesCan you keep a secret? Eagle, Colorado, is a special place, and they have a fantastic triathlon that you should not miss. They're calling for triathlon experts, newbies, and everyone in between, including the kids! Join them on July 9th for the 14th Annual LG Tri, a sprint triathlon held in the beautiful Vail Valley town of Eagle.
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