Event details subject to change. Please confirm all information via event website.
Tortoise & Hare 12K
Cottonwood Glen Park 3074 S Overland Trail, Fort Collins, CO, United StatesThe Tortoise & Hare (T&H) is a low-key “handicap” series of seven races that are run monthly from October to April, typically on the first or second Sunday of the month. Computer-predicted times allow runners of all levels to compete equally. Runners start at staggered intervals with faster runners (Hares) trying to catch slower runners […]
Cayson Pearson Memorial 5K
Green Mountain High School 13175 West Green Mountain Dr, Lakewood, CO, United StatesThis annual fun run/walk (& knockout tournament if you also love basketball) is held each year to honor the memory of Cayson Pearson, award scholarships, raise funds for additional and future scholarships, and raise awareness for mental health & suicide prevention.
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 […]
Three Creeks Half Marathon
Cherry Creek State Park 4201 S Parker Rd, Aurora, CO, United StatesRacing Underground brings you an amazing half marathon this spring! The Three Creeks Half Marathon features a half marathon course that is flat, fast and scenic! Travel on foot through some of the most beautiful parts of Cherry Creek State Park, with a total combined elevation gain of only 291 feet spread out over 13.1 […]
Desert RATS Trail Running Festival
Mack Trailhead on Kokopelli Trail 1022 Old US Hwy 6 & 50, Mack, CO, United StatesDesert Rats Trail Running Festival by UTMB has four unique distances, three days of racing and indescribable views of the desert. There is something for every runner. Enjoy views of the Colorado River as you race through flowy singletrack, climb up the mesa, and take in the vastness of the desert.
Run the Ranch Trail Runs
Sylvan Dale Guest Ranch 2939 N CR 31D, Loveland, CO, United StatesFor the 5th year running and benefiting the Heart J organization, we are bringing back an amazing and beautiful trail race to Loveland, CO. You will have 6 distances to choose from. Come run on beautiful trails on private land at Sylvan Dale Guest Ranch. The views alone are to die for! There are different […]
Mountain Ridge Trail Race
Mountain Ridge Middle School 10590 Mountain Vista Ridge, Highlands Ranch, CO, United StatesMountain Ridge takes place near Highlands Ranch primarily on the Douglas County East-West Regional Trail. This gently rolling course will keep the Heart Rate pumping while offering some of the best views in the front range. The Mountain Ridge Trail Race will once again start and finish from Mountain Ridge Middle School, and offer 100% […]
Amasa Trail Race
Kane Creek Trailhead Moab, UT, United StatesAmasa Trail Race is a 25K, 15K, 10K through one of Moab's most prized trail systems. Run past petroglyphs, the famous whale rock, red rock, canyons, and the Colorado River, as you experience the desert in the spring time.
Dash for Detection 5K
City Park - Denver 1700 N York St, Denver, CO, United StatesBe part of a movement at Denver's City Park for our 5K event dedicated to raising awareness about oral cancer. Oral cancer can affect any area of the mouth and is influenced by risk factors such as tobacco and heavy alcohol use, as well as HPV infection. Symptoms to watch for include non-healing sores, lumps, […]
ASDAsh 5K to Beat Tooth Decay
Library Commons 12950 E Montview Blvd, Aurora, CO, United StatesJoin us for the University of Colorado School of Dental Medicine's 6th Annual ASDAsh 5K to Beat Tooth Decay! We are excited to share that our 5K course has been revamped this year to offer a fresh new route through campus. This year, we will be starting and ending at the LIBRARY COMMONS! Additionally, we're […]
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