Event details subject to change. Please confirm all information via event website.
Bluffs 8K Trail Run
Prairie Sky Park 10249 Ridgegate Circle, Lone Tree, CO, United StatesThe Bluffs 8K Trail Race has rolling hills and beautiful views as you run or walk through the Bluffs Regional Park. The race will start/finish near the Prairie Sky parking lot o n August 28th.
Grand Traverse Mountain Run
Mt. Crested Butte Mt. Crested Butte Ski Resort, Crested Butte, CO, United StatesThe Grand Traverse Mountain Run is a point-to-point ultra marathon from Crested Butte to Aspen, Colorado. The course follows the route of the Grand Traverse Backcountry Ski race. In total, runners travel 40 miles across the Elk Mountains with over 6,000′ of elevation gain.
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 […]
10K (and 5K) @ 10,000 Feet
Rabbit Ears Pass Steamboat Springs, CO, United StatesThis is a challenging trail run with beautiful terrain and breathtaking scenery. The 10K race begins at 10,000 ft at the summit of Rabbit Ears Pass. The course begins by heading uphill on USFS dirt roads and 2 track, and then then heads downhill on single-track, ending on a cross country single-track. The total elevation […]
Labor Day Half Marathon
Salisbury Park 11920 N Motsenbocker Rd, Parker, CO, United StatesCelebrate the last blast of summer at the Labor Day Half Marathon. Sweat your socks off and let summer have its last hooray at Parker's Salisbury Park just a few miles southeast of Denver. There's a distance to meet every taste with a half marathon 10K and 5K.
Oak Creek No Fun Run
Oak Creek Town Hall 123 Nancy Crawford Blvd, Oak Creek, CO, United StatesThe Running Series is excited to have the Oak Creek No Fun Run on our schedule again! Please join us in remembering long-time Running Series competitor Larry Brooks, a former organizer of the Oak Creek No Fun Run. This 5K run will take you through the streets of Oak Creek, looping through the scenic Oak […]
Littlefoot Sprint Triathlon
Bear Creek Lake Park 15600 W Morrison Rd, Lakewood, CO, United StatesEnjoy a fun late season tri at beautiful Bear Creek Lake Park in a land before time. Set at the base of the foothills, the Littlefoot Triathlon starts off with a 750 meter swim in Big Soda Lake, with water temps expected to be approximately 70 degrees. Next, a rolling 15K bike ride on smooth […]
CMRA South Seven
Bluffs Regional Park 10099 Crooked Stick Pl, Lone Tree, CO, United StatesThe course will be on wide, crushed gravel paths and, depending on the status of construction in the nearby neighborhood, potentially a little bit of single track. It's a hilly, but very run-able course, a few ups and downs during this 7 mile course! We'll travel "the wrong way" around the standard Bluffs route before […]
Spirit of the Valley Run
St. Matthew's Episcopal Church 3888 27 1/2 Road, Grand Junction, CO, United StatesHelping to Heal! The Spirit of the Valley Run, Walk 'N Roll 1K and 5K timed races are set for Saturday September 9, 2023. Runners, walkers and rollers are all welcome for a great morning of competition, fun, food, and rock ‘n roll. The race will benefit two local organizations - the VA Recreational Therapy […]
RMRR 5K/10K
Riverwalk Ballfields 9830 Riverdale Rd, Thornton, CO, United StatesEveryone – slow, fast, or in-between – can win at RMRR Trophy Series races. With our handicap scoring system, we predict YOUR finish time based on recent running results, giving you a great goal to shoot for whatever your speed. Just show up an hour before the start and we’ll get you ready for your race. It’s an […]
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