Event details subject to change. Please confirm all information via event website.
Week of Events
Blue Sky Trail Marathon
Blue Sky Trail Marathon
Taking place on the trails between Horsetooth Mountain Park and the Devil’s Backbone Open Space, the Blue Sky courses take you on a north-south tour of the easternmost hogbacks of Northern Colorado’s Front Range mountains. With a moderate amount of elevation gain and loss and a variety of terrain, the route offers a little bit […]
Sunday, October 18, 2026
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October 18, 2026 -CDDR 5K Run to Rescue
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October 18, 2026 -PPRR Fall Series II
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October 18, 2026 -Avery Fall 5K
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October 18, 2026 -Palmer Lake .5K (Yes “Point” 5)
CDDR 5K Run to Rescue
The Colorado Domestic Duck Rescue 5k Run to Rescue is a untimed fun run or walk to support the rescue and homing of domestic ducks dumped by their owners into environments where they will not survive. The run, to be held Sept. 28, 2025 at 9 a.m., supports education efforts to build awareness concerning proper […]
PPRR Fall Series II
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.
Avery Fall 5K
Join us for The Avery Fall 5k @ Avery Brewing on October 18, 2026, for a 5k event that starts and ends at this awesome taproom in Boulder. Run, walk, jog - whatever goes! Complete the course and celebrate with us and a FREE Avery beer at the finish line. Start waves available at 10:00 […]
Palmer Lake .5K (Yes “Point” 5)
The Fastest Growing (and shortest) Running Event in CO is back!!! Awake the Lake will hold its 8th Annual PALMER LAKE .5K (Yes “Point” 5), and it just keeps getting better. The “run for everyone” is a challenging entire ½ kilometer, where competitors are rewarded not only with the unique views of beautiful Palmer Lake, […]
Monday, October 19, 2026
No events on this day.
Tuesday, October 20, 2026
No events on this day.
Wednesday, October 21, 2026
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October 21, 2026 -Crimson Classic 5K
Crimson Classic 5K
The University of Denver's Annual Crimson Classic 5K Run/1.5 Mile Walk will take place on Carnegie Green Lawn. Music, stretching, and snacks will start at 2:15pm. The focus of the Crimson Classic is to celebrate wellness and to bring together our community. This is a free event! Please join us for a selection of wellness […]
Thursday, October 22, 2026
No events on this day.
Friday, October 23, 2026
No events on this day.
Saturday, October 24, 2026
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October 24, 2026 -Canyonlands Ultra
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October 24, 2026 -Bridge Runner Ultra
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October 24, 2026 -Cowboy Half Marathon
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October 24, 2026 -Race to Cure Sarcoma 5K
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October 24, 2026Trick or Trot 5K
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October 24, 2026 -YMCA Creepy Crawl 5K
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October 24, 2026 -MonsterDASH
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October 24, 2026 -Quick Draw @ McGraw Trail Race
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October 24, 2026 -Spooky Sprint 5K
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October 24, 2026 -Hoofin’ It Through the Hollows 5K
Canyonlands Ultra
Canyonlands 100K, 50 Mile, 50K, Marathon, Half Marathon, and 15K Canyonlands Ultra starts and finishes at the Behind the Rocks Trail, along the border of the Behind the Rocks Wilderness Study Area. Moab's last hidden gem; its tall standing Navajo Sandstone domes and fins can be seen from many places along the course. From smooth double […]
Bridge Runner Ultra
Discover the scenic 35-mile loop starting in Canon City, Colorado, tracing along the Arkansas River and through historic Tunnel Drive tunnels. Ascend to 7,109 feet for panoramic views of Royal Gorge and Pikes Peak. Runners navigate pristine singletrack in Royal Gorge Mountain Park, cross the highest US bridge, and descend through Temple Canyon. With only […]
Cowboy Half Marathon
With a new race date for 2021, the Mancos Cowboy Half Marathon and 5k is a beautiful and scenic course with a mix of pavement, dirt road, and trail. Grab a few friends and spend the weekend in the beautiful Mancos Valley. Due to COVID, initially this race is limited to only 175 people for […]
Race to Cure Sarcoma 5K
The Race to Cure Sarcoma (RTCS) is the premier run/walk series in the United States, focused on raising awareness, providing education, and research funds for sarcoma. Each year, the Sarcoma Foundation of America (SFA) hosts more than (20) RTCS events across the country. We provide a unique space in the sarcoma community where patients, survivors, their friends, […]
Trick or Trot 5K
Join the Apex Park and Recreation District Foundation for the inaugural Trick or Trot 5K! Runners and walkers of all ages and abilities are all welcome to join us for this Halloween celebration. Dress in your Halloween best for a chance to win prizes for the costume contest. There will be a separate 1-mile Trick […]
YMCA Creepy Crawl 5K
Our annual "spooky themed" race starts at the Palmer Lake Regional Recreation Area. We head down the scenic Santa Fe Trail for a bit then turnaround and finish with a lap around Palmer Lake. This is sure to be a fun day for everyone! Our Kids Monster Dash Fun Run is for kids 12 and […]
MonsterDASH
Colorado's Favorite Halloween Runs....Each year the Theme Changes!! This festival on Sloan's Lake, brings scary music, tons of Blow Ups, Carnival Games and Scary Clowns. The 5k and 10k run loops around beautiful Sloan's Lake and finishes in the CIRCUS Expo....with Games, Hot Dogs, Pop Corn and Balloons. The Race starts at 9:30am for the […]
Quick Draw @ McGraw Trail Race
Come one, come all! And join us in the "Quick Draw @ McGraw" 2 Mile Trail Run, organized and hosted by CRATES Colorado and benefitting McGraw Memorial Park. This challenging trail course located directly south of the Keystone Bridge located inside McGraw Park will give runners of all skill levels a true test of their […]
Spooky Sprint 5K
This eerie evening race winds through a chilling course at the YMCA of Pueblo. The thrilling Halloween themed race is perfect for all ages and fitness levels. Recommended for those who want to have a hauntingly good PR. The best part of Spooky Sprint is you get to wear your costume! Whether you’re running as […]
Hoofin’ It Through the Hollows 5K
Runners of all ages and abilities, families, and dogs are all welcome to join us for this Halloween celebration! Dress in your Halloween best for a chance to win prizes at the pre-race the costume contest before the race at 5 PM. Race Start Time: 5:30 PM
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