Event details subject to change. Please confirm all information via event website.
Week of Events
Run Crazy Horse Marathon
Run Crazy Horse Marathon
The Run Crazy Horse Marathon events begin in the shadow of the world's largest mountain carving, Crazy Horse Memorial, and finishes in the heart of the Black Hills... Hill City, South Dakota
Sunday, October 4, 2026
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October 4, 2026Hot Chocolate 15K/10K/5K
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October 4, 2026 -Windsor Marathon
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October 4, 2026 -OTILLO Swimrun
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October 4, 2026 -RMRR 8M and 5K
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October 4, 2026 -Rubey Rescue Run
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October 4, 2026 -PPRR Fall Series I
Hot Chocolate 15K/10K/5K
Start and finish at Civic Center Park amongst Denver's biggest chocolate aficionados. All participants receive a technical running quarter zip with registration. Runners can also enjoy hot chocolate, chocolate fondue, and dipping snacks at the post-race party! It’s not just a race, it’s an experience. Register today!
Windsor Marathon
Welcome to the annual Windsor CO Race! This year's event will start and end at The Island at Pelican Lakes in Water Valley, with a great after party including beer, music and live entertainment! New to the series is a Full Marathon distance, as well as the Half Marathon and Heavy 10K.
OTILLO Swimrun
Welcome to the world of ÖTILLÖ Swimrun! ÖTILLÖ Swimrun, the original swimrun race, embodies the spirit of adventure, endurance, and teamwork. Originating in Sweden, ÖTILLÖ translates to “island to island” in Swedish, reflecting the essence of the sport where participants traverse across a series of islands by swimming and running, often in challenging and picturesque […]
RMRR 8M and 5K
Everyone – 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 […]
Rubey Rescue Run
Join us for a 5K uphill race on Buttermilk Mountain—with your furry friends, or without! Starting at the base near Buttermilk Mountain Lodge (formally known as Bumps) and climbing 1,700 feet to the Cliff House, this timed race ends with stunning views of the Maroon Bells. Prizes for top 3 female and male finishers. Also […]
PPRR Fall Series I
The Fall Series consists of four trail races in four different city/county parks. The trails range from well-maintained to rocky with tree roots. Each event is a unique challenge at a different distance, getting longer as the series progresses. Fall Series I - 3.8 MileFall Series II - 4 MileFall Series III - 5.5 MileFall […]
Monday, October 5, 2026
No events on this day.
Tuesday, October 6, 2026
No events on this day.
Wednesday, October 7, 2026
No events on this day.
Thursday, October 8, 2026
No events on this day.
Friday, October 9, 2026
No events on this day.
Saturday, October 10, 2026
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October 10, 2026 -Long View Marathon
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October 10, 2026 -CMRA Stone House Triple-Cross
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October 10, 2026 -The Pretzel Run
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October 10, 2026 -Manitou 5K
Long View Marathon
Showcasing a unique city-to-city trail connection, The Long View Marathon and Half Marathon runs from Fort Collins to Loveland. Together, Gnar Runners and Sweetheart City Racing bring a unique collaboration to Colorado’s running scene in this one-of-a-kind race event.
CMRA Stone House Triple-Cross
The race will begin just west of Estes St across from the Stone House Park on Bear Creek in Lakewood. It will head west mostly on dirt trails through the creek side trees with a short piece on the Bear Creek bike path. Near the Fox Hollow golf course the route crosses Bear Creek 3 […]
The Pretzel Run
Oktoberfest in Colorado!! Owned and managed by a Bavarian Race Director.... The Annual PRETZEL RUN will move 8 blocks down to Louisville Community Park for a LARGER BIER GARDEN, LIVE MUSIK and 4 Trail Races. Hlaf Marathon, 10k, 5k and Kids Mile. (Allows more room for the race) and the park will allow for a […]
Manitou 5K
Come celebrate the beauty of Manitou Springs! Race starts and ends in Fields park. Run along the rolling creek, view the art along the Creekwalk, loop the beautiful parks full of murals, sculptures, disc golf, skateparks and more. The path is flat and accessible to all. Run/walk. Bring your family, bring your neighbor, bring your […]
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