Colorado Run Listings
Saturday 6 Oct 2018
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 6 Oct 2018
Ridgeline Trail Race
Ridgeline Trail 50K, Marathon, Half Marathon and 10K - LiveBIG 5K and Family Adventure Race
Saturday 6 Oct 2018
Runway 5K Run for the Angels
Want to run on an airplane runway? Here's your chance
Saturday 6 Oct 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 6 Oct 2018
Fall EverGold 10-Mile Run
The course has runners taking the ascent up the trail first, then turning around to enjoy the decent over the second half of the race
Saturday 6 Oct 2018
Rim to Rim Royal Gorge 5K/10K
The only race with a finish line over 900 feet in the air!
Saturday 6 Oct 2018
Bacon Strip Races
10 Mile Race 4 Mile Race
Saturday 6 Oct 2018
Caring for Community 10K
Showcases a unique route on various trails, bike paths, and sidewalks around Aspen and has become an off-season highlight for many local runners
Saturday 6 Oct 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 6 Oct 2018
Color Me Rad
We're the only 5K that will send you running through RAD color stations
Sunday 7 Oct 2018
Boulder Rez Marathon
Boulder's biggest marathon
Sunday 7 Oct 2018
Rolland Moore Park 4k Tortoise & Hare
All about anyone having the same ability to win the race
Sunday 7 Oct 2018
XTERRA Marathon of Trail Races
5K, Half, Full
Sunday 7 Oct 2018
Louisville Trail Half Marathon
This Flat and Fast Course is sure to be a a PR breaker
Sunday 7 Oct 2018
Rim to Rim Royal Gorge Half Marathon
The only race with a finish line over 900 feet in the air!
Sunday 7 Oct 2018
Costumed K9 Canter & 1 Mile Fun Run
Come show off your dog and his costume!
Sunday 7 Oct 2018
Justice Run
5K & 10K
Sunday 7 Oct 2018
Palmer Lake .5K
The Fastest Growing (and shortest) Running Event in CO
Saturday 13 Oct 2018
CC Tiger Classic
To benefit the Tiger Pride Fund
Saturday 13 Oct 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 13 Oct 2018
Stone House (2x) Triple-Cross
The distance will be approximately 8.4 miles
Saturday 13 Oct 2018
Hero Run/Walk
To help Crossroad's Turning Points provide recreation and gym memberships for clients in treatment
Saturday 13 Oct 2018
Apple Cider 5k/10k
Includes warm apple cider after the race
Saturday 13 Oct 2018
5K Survivor's Run
Saturday 13 Oct 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 14 Oct 2018
Fall Series 4.5 mile
Norris Penrose Event Center
Saturday 20 Oct 2018
Blue Sky Trail Marathon
Takes place on the trails between Horsetooth Mountain Park and the Devil's Backbone Open Space
Saturday 20 Oct 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 20 Oct 2018
Great Trailhead Foot Race
10 Miler and 5k
Saturday 20 Oct 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 20 Oct 2018
Cheyenne Mountain Run
3M and half marathon Trail Run
Saturday 20 Oct 2018
Waldo Waldo 5K Grand Finale
The final year of the Waldo costume theme
Sunday 21 Oct 2018
Ute Scoot 5K
To support technology at Ute Meadows Elementary
Saturday 27 Oct 2018
Pumpkin Smash and Dash 5K/10K
Get halloween weekend off to a great start with a little cardio and then some pumpkin carving, vendor trick or treats, costume contests, music, youth activities and much, much more
Saturday 27 Oct 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 27 Oct 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 27 Oct 2018
Creepy Crawl 5K
Awards given for costumes
Sunday 28 Oct 2018
Westy Half and 5k
Walkers and Runners of all abilities welcome
Sunday 28 Oct 2018
Kooky-Spooky 1M, 5K, 10K, & Half Marathon
Superior events from start to finish
Sunday 28 Oct 2018
Fall Series 5.5 mile
Ute Valley Park
Saturday 3 Nov 2018
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 3 Nov 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 3 Nov 2018
Run for Orphans
Brings organizations and churches together to advocate for the needs of orphans in our community and around the world
Saturday 3 Nov 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 4 Nov 2018
Spring Canyon Park 5k Tortoise & Hare
All about anyone having the same ability to win the race
Sunday 4 Nov 2018
Canya Canon 5K and 5-mile
Come discover North Cheyenne Canon in the fall
Saturday 10 Nov 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 10 Nov 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 10 Nov 2018
Hildebrand Ranch Park 6.6 miler
Most is on single track with some crushed gravel through the neighborhood
Sunday 11 Nov 2018
Fall Series 6.5 mile
Palmer Park
Saturday 17 Nov 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 17 Nov 2018
Pumpkin Pie 5K and 10K
Ends with a huge slice of pie
Saturday 17 Nov 2018
10k Turkey Trek and 2k Toddle
Egg Nog Chug Challenge
Saturday 17 Nov 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Thursday 22 Nov 2018
Parker Turkey Day 5k
Thursday 22 Nov 2018
Gobble Wobble
All net profits are donated to a charity
Thursday 22 Nov 2018
Great Turkey Chase
Thursday 22 Nov 2018
Turkey Day 5K
At Broomfield County Commons
Thursday 22 Nov 2018
Pueblo Turkey Trot
All proceeds from the event support children and families in our community
Thursday 22 Nov 2018
YMCA Turkey Trot 5K
Thursday 22 Nov 2018
Highlands Ranch Turkey Day 5K
Thursday 22 Nov 2018
NCMC Turkey Trot
Raises funds to assist Cardiac and Pulmonary Rehabilitation patients
Thursday 22 Nov 2018
The Pilgrimage Run
Join us on Thanksgiving Day - It's not about turkey!
Thursday 22 Nov 2018
GJ Turkey Trot 5K
Thursday 22 Nov 2018
Turkey Rock Trot
All proceeds benefit the Douglas/Elbert Task Force
Thursday 22 Nov 2018
Eagle-Vail Turkey Trot
Thursday 22 Nov 2018
Mile High United Way Turkey Trot
This fun Thanksgiving tradition draws more than 20,000 people to Washington Park each year
Thursday 22 Nov 2018
Harvesting Hope 5K
As a family focused event, kids 10 and under are invited to participate in a free 1K fun run and strollers are welcome on the course
Saturday 24 Nov 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 24 Nov 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 1 Dec 2018
Colder Bolder
This 5K is a little different, but so are those of us who enjoy running in the cold
Saturday 1 Dec 2018
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 1 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 1 Dec 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 1 Dec 2018
Chasing Santa 5K
Santa Suit with your registration
Saturday 1 Dec 2018
WinterFest 5k
The race will start and finish at Festival Park in Downtown Castle Rock
Sunday 2 Dec 2018
Spring Park 6k Tortoise & Hare
All about anyone having the same ability to win the race
Sunday 2 Dec 2018
Rudolph Ramble 5K
Grab your running shoes and join the Rudolph Search & Rescue Team
Sunday 2 Dec 2018
Jingle Bell Run
Be part of the largest holiday-themed 5K race series anywhere
Saturday 8 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 8 Dec 2018
Sweaty Sweater Race
Calling all Ugly Sweaters... We want to see your most hideous, outrageous, bulky and unforgettable UGLY sweater
Saturday 8 Dec 2018
Thornton Winterfest 5K
Celebrate the spirit of the season with this unique event that is part of the magic of WinterFest
Saturday 8 Dec 2018
Fa La La 1M, 5K, 10K, & Half Marathon
Superior events from start to finish
Saturday 8 Dec 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 8 Dec 2018
Jingle Bell 5K
Costumes are encouraged (and add to the fun of helping the Y strengthen our community!)
Saturday 8 Dec 2018
Sand Creek 5 Miler
Runners will compete over a 5 Mile distance on a course at the Bluff Lake Nature Center on the Sand Creek Greenway
Saturday 8 Dec 2018
Banning Lewis Ranch Santa Sprint
Celebrate the holiday season by joining us in the Santa Sprint 5k. Runners, walkers, and well behaved (leashed) dogs are encouraged to participate.
Saturday 15 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 15 Dec 2018
Santa Stampede
A flat and fast 5K and 10K held along the banks of the scenic South Platte River
Saturday 15 Dec 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 22 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 22 Dec 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 29 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 29 Dec 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Tuesday 1 Jan 2019
Resolute Runner 5k
5k on new year's day
Saturday 5 Jan 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 5 Jan 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 5 Jan 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 6 Jan 2019
Winter Highlands Ranch Six Pack Series #1
1 Mile or 5k
Saturday 12 Jan 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 12 Jan 2019
Polar Prowl 1M, 5K, 10K, & Half Marathon
Superior events from start to finish line
Saturday 12 Jan 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 13 Jan 2019
Fossil Creek Park 5k Tortoise & Hare
All about anyone having the same ability to win the race
Sunday 13 Jan 2019
Winter Highlands Ranch Six Pack Series #2
2 Mile or 5k
Saturday 19 Jan 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 19 Jan 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 20 Jan 2019
Arctic Prairie Dog Half, 10k & 5k
Prairie Dog Half
Saturday 26 Jan 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 26 Jan 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 27 Jan 2019
Winter Highlands Ranch Six Pack Series #3
5k
Saturday 2 Feb 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 2 Feb 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 2 Feb 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 3 Feb 2019
Edora Park 8k Tortoise & Hare
All about anyone having the same ability to win the race
Sunday 3 Feb 2019
Winter Highlands Ranch Six Pack Series #4
4 Mile or 5k
Saturday 9 Feb 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 9 Feb 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 9 Feb 2019
Heart Throb Run 5k - Arvada
I'm a heart throb!
Saturday 9 Feb 2019
Heart Throb Run 5k - Longmont
I'm a heart throb!
Saturday 16 Feb 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 16 Feb 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 17 Feb 2019
Winter Highlands Ranch Six Pack Series #5
5 mile or 5k
Saturday 23 Feb 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 23 Feb 2019
Mardi Crawl 1M, 5K, 10K & Half Marathon
Superior events from start to finish line
Saturday 23 Feb 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 2 Mar 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 2 Mar 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 2 Mar 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 3 Mar 2019
Lee Martinez Park 10k Tortoise & Hare
All about anyone having the same ability to win the race
Sunday 3 Mar 2019
Winter Highlands Ranch Six Pack Series #6
5k or 10k
Saturday 9 Mar 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 9 Mar 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 16 Mar 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 16 Mar 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 16 Mar 2019
Erin Go Braugh 7.77k
Colorado's Luckiest Race!
Saturday 23 Mar 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 23 Mar 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 24 Mar 2019
Spring Fever 1M, 5K, 10K & Half Marathon
Superior events from start to finish.
Saturday 30 Mar 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 30 Mar 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 31 Mar 2019
Cottonwood Glen Park 12k Tortoise & Hare
All about anyone having the same ability to win the race
Saturday 6 Apr 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 6 Apr 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 6 Apr 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 13 Apr 2019
Beat the Heat 1M, 5K, 10K, Half and Full Marathon
Superior events from start to finish line.
Saturday 13 Apr 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 13 Apr 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 20 Apr 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 20 Apr 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 21 Apr 2019
Hams and Hamstrings® 5K
Colorado's Easter Sunday 5K - every finisher gets a free mini Easter Ham
Saturday 27 Apr 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 27 Apr 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 4 May 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 4 May 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 4 May 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 11 May 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 11 May 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 12 May 2019
Colorado Women's Classic
#runclassy
Saturday 18 May 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 18 May 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 25 May 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 25 May 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 1 Jun 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 1 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 1 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 2 Jun 2019
Colorado 13er
13er, 10k, 5k
Saturday 8 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 8 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 15 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 15 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 22 Jun 2019
Summer Breeze 1M, 5K, 10K and Half Marathon
Superior events from start to finish line
Saturday 22 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 22 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 29 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 29 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Thursday 4 Jul 2019
Longmont Half and 5k
Walkers and Runners of all abilities welcome
Saturday 6 Jul 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 6 Jul 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 6 Jul 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 13 Jul 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 13 Jul 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 20 Jul 2019
Dog Days 1M, 5K, 10K & Half Marathon
Superior events from start to finish line
Saturday 20 Jul 2019
Kickers For Kids Fun Run
0.82 Mile, 5K, 10K, 13.1, 26.2, 50K, 50 Mile, 100K, 3-Person 50 Mile Relay, 6-Person 50 Mile Relay
Saturday 20 Jul 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 20 Jul 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 27 Jul 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 27 Jul 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 3 Aug 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 3 Aug 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 3 Aug 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 10 Aug 2019
Holy Cow Trail Stampede 5k/10k
Trail Stampede!
Saturday 10 Aug 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 10 Aug 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 17 Aug 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 17 Aug 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 24 Aug 2019
Runapalooza 1M, 5K, 10K and Half Marathon
Superior events from start to finish line.
Saturday 24 Aug 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 24 Aug 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 31 Aug 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 31 Aug 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 1 Sep 2019
Flea Market Mile
Sunday 1 Sep 2019
Cheap 5K
Celebrate cheap Americana - and eat pancakes!
Saturday 7 Sep 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 7 Sep 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 7 Sep 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 28 Sep 2019
Haxtun Corn Festival 5K
