Colorado Run Listings
Friday 20 Jul 2018
Hardrock 100
An ultramarathon of 100.5 miles in length, plus 33,050 feet of climb and 33,050 feet of descent
Saturday 21 Jul 2018
Prairie Dog Half, 5K, and 10K
5K 10K Half Marathon
Saturday 21 Jul 2018
Dog Days 1M, 5K, 10K & Half Marathon
Superior events from start to finish
Saturday 21 Jul 2018
Kickers For Kids Fun Run
5K / 10K / 13.1 / 26.2 / 50K / 50 Miler
Saturday 21 Jul 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 21 Jul 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 21 Jul 2018
Colorado Coyotes One Mile Race
How fast can you run a mile?
Saturday 21 Jul 2018
Just for J 5K
Saturday 21 Jul 2018
The Great Inflatable Race
The Bounciest Fun Run on Earth. SAVE 10% with Promo Code 'RUNDIR'
Saturday 21 Jul 2018
La Sportiva Camp Hale Half Marathon
Half marathon, 10K and 5K
Sunday 22 Jul 2018
Black Hawk Trail Half Marathon
If you are looking for one of the best "hill" courses the ERS has to offer, then look no further
Sunday 22 Jul 2018
Speedway 5K
Tuesday 24 Jul 2018
Frisco Mountain Goat Kids Trail Running Series #3
Series of four kids trail running races over the summer
Thursday 26 Jul 2018
Six Pack Series - Summer-Fall #4
#RaceMyPace
Friday 27 Jul 2018
Blue Moon Trail Run Series #2
5K & 8K
Saturday 28 Jul 2018
Pikes Peak Ultra
50-mile, 50K, and 30K
Saturday 28 Jul 2018
Classic 10K & 5K
The Classic 10K Run is a point-to-point run. The Classic 5k Run is a shorter option through Monument Valley Park.
Saturday 28 Jul 2018
Elevation 5K
Fundraiser for Conifer Lobos Unified Boosters and the Conifer Community Trails
Saturday 28 Jul 2018
Fort Collins Human Race
Fast 5K, 10K & 1/2 Marathon through historical downtown
Saturday 28 Jul 2018
Spring Creek Memorial
Held on the beautiful Spring Creek trail with wildflowers and Aspen trees next to bubbling Spring Creek
Saturday 28 Jul 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 28 Jul 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 28 Jul 2018
Pirate Plunge 5K Mud Run
A 5K designed for all athletic abilities
Saturday 28 Jul 2018
Color in Motion 5K
Your body moving while being plastered in an explosion of vibrant color with all your friends and family!
Friday 3 Aug 2018
Wild West Relay
Fort Collins to Steamboat Springs
Saturday 4 Aug 2018
Kennebec Mountain Run
An alpine trail race held in the La Plata Mountains
Saturday 4 Aug 2018
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 4 Aug 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 4 Aug 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 4 Aug 2018
Hears 5K Experience
Tuesday 7 Aug 2018
Frisco Mountain Goat Kids Trail Running Series #4
Series of four kids trail running races over the summer
Thursday 9 Aug 2018
Six Pack Series - Summer-Fall #5
#RaceMyPace
Saturday 11 Aug 2018
Rocky Mountain Half
#RMHalf
Saturday 11 Aug 2018
Aspen Backcountry Marathon
Boasting spectacular views of the Elk Mountains and the city of Aspen
Saturday 11 Aug 2018
Mt. Sneffels Marathon
Run point to point downhill on a dirt road along the Uncompahgre River
Saturday 11 Aug 2018
Holy Cow Trail Stampede 5k/10k
Trail Stampede!
Saturday 11 Aug 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 11 Aug 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 11 Aug 2018
Odyssey Beerwerks Beer Run
Are you ready to get your brew on?!?
Saturday 18 Aug 2018
Pikes Peak Ascent
Saturday 18 Aug 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 18 Aug 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 19 Aug 2018
Pikes Peak Marathon
America's ultimate challenge
Sunday 19 Aug 2018
Dog Days of Summer
5K/10K & 1 Mile Doggy Dash
Thursday 23 Aug 2018
Six Pack Series - Summer-Fall #6
#RaceMyPace
Saturday 25 Aug 2018
Runapalooza 1M, 5K, 10K & Half Marathon
Superior events from start to finish
Saturday 25 Aug 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 25 Aug 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 26 Aug 2018
Erie Half Marathon and 5K
Bring 5 non-perishable items on race day and get entered into the race-day raffle.
Saturday 1 Sep 2018
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 1 Sep 2018
Start It Off 5k Color Run
A fun 5k color run to start off the festivities for the Labor Day weekend
Saturday 1 Sep 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 1 Sep 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 2 Sep 2018
Cheap 5K
Celebrate cheap Americana - and eat pancakes!
Sunday 2 Sep 2018
Flea Market Mile
Monday 3 Sep 2018
ADT Marathon
10K, Half, Full
Friday 7 Sep 2018
Flaming Foliage Relay
Idaho Springs to Buena Vista
Saturday 8 Sep 2018
Arvada Harvest Half Marathon
Half Marathon, 5K/10K/10M
Saturday 8 Sep 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 8 Sep 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 8 Sep 2018
The Denver 5k
Fun, flat and fast around beautiful Sloan's Lake!
Sunday 9 Sep 2018
Step4Life
Raises money to help support patients and their families that have been affected by lung cancer
Saturday 15 Sep 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 15 Sep 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 15 Sep 2018
STOMP out Epilepsy and SUDEP
Funds raised by this Foundation benefit those with epilepsy
Saturday 22 Sep 2018
Fallfest 1M, 5K, 10K,Half Marathon, & Marathon
Superior events from start to finish line
Saturday 22 Sep 2018
The Pioneer Prairie Dog Half, 10k & 5k
Prairie Dog Half Series
Saturday 22 Sep 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 22 Sep 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 23 Sep 2018
XTERRA Golden Gate Canyon
This course best exemplifies the spirit of the XTERRA Trail Run offering a 7k and 20K distances
Saturday 29 Sep 2018
Colorado Springs Marathon
Full, half, 5K, Kids K
Saturday 29 Sep 2018
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 29 Sep 2018
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 29 Sep 2018
Horse Gulch Hustle Trail Run
Tackle thirteen miles of rocky, rugged trail in Durango's renowned Horse Gulch
Saturday 29 Sep 2018
Durango Double Half Trail Marathon
Benefits the Women's Resource Center
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
Aspen parkrun
Weekly Free 5km Timed Run
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
Louisville Trail Half Marathon
This Flat and Fast Course is sure to be a a PR breaker
Sunday 7 Oct 2018
Costumed K9 Canter & 1 Mile Fun Run
Come show off your dog and his costume!
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
South Boulder Creek parkrun
Weekly Free 5km Timed Run
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 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
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
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
South Boulder Creek parkrun
Weekly Free 5km Timed Run
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 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
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Thursday 22 Nov 2018
Parker Turkey Day 5k
Thursday 22 Nov 2018
The Pilgrimage Run
Join us on Thanksgiving Day - It's not about turkey!
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 8 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
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 15 Dec 2018
Aspen parkrun
Weekly Free 5km Timed Run
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
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
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
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
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
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
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 2 Mar 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
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
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
Sunday 12 May 2019
Colorado Women's Classic
#runclassy
Saturday 22 Jun 2019
Summer Breeze 1M, 5K, 10K and Half Marathon
Superior events from start to finish line
