Colorado Run Listings
Thursday 2 May 2019
Run/Walk for Mental Health
Be part of our journey to raise awareness and understanding for mental illness in all 50 states in 50 days
Saturday 4 May 2019
Collegiate Peaks Races
25 miles and 50 miles
Saturday 4 May 2019
Grand Valley Marathon
See some of the most historic and scenic areas in the Grand Valley
Saturday 4 May 2019
Greenland Trail 50K
50K, 25K, 8M, 4M
Saturday 4 May 2019
runBlossom
1/2 marathon and both a 5k & 5mile option as well as a Kids' Fun Run & Toddler Trot
Saturday 4 May 2019
Take 5 in the Garden
5K and 5Mile Courses
Saturday 4 May 2019
Aspen 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
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 4 May 2019
Bob Turner Classic
5K Fun Run/Walk
Saturday 4 May 2019
Kohl 5K
Raising funds for mobile computer labs for Kohl Elementary School
Saturday 4 May 2019
BT5K
Part of the American Brain Tumor Association's Breakthrough for Brain Tumors 5K series
Saturday 4 May 2019
Cross Country Challenge 6k
Runners will compete over a 6K distance on a course starting and finishing on the Great Lawn Park
Saturday 4 May 2019
Furry Scurry
Walk with us to raise funds for homeless pets and horses
Saturday 4 May 2019
Duck Waddle 5K
Run with us and automatically adopt a rubber Duck to float down the Fall River
Saturday 11 May 2019
Rabbit Valley Half
With short steep climbs, rock gardens and sand traps runners will enjoy 13.1 miles of gorgeous early season desert.
Saturday 11 May 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 11 May 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 11 May 2019
Carbon Valley Half Marathon, Family & Friends Relay, 5K & Fun Run
To benefit Autism Research
Saturday 11 May 2019
Airlife Memorial 10K/5K
The 5K and 10K are both official USATF certified qualifiers for the BolderBoulder
Saturday 11 May 2019
Climb4Change
Think of a 5K, but instead of running 3 miles, you are racing up the stairs of the Challenge Hill at Philip S. Miller Park
Saturday 11 May 2019
Montrose Aruna Run/Walk
Run or walk for an enslaved woman by name whom the Aruna Project staff personally know and are working to free from the brothels
Saturday 11 May 2019
Happy Smackah
An untimed, Fun Run / Walk around beautiful Lake McIntosh
Saturday 11 May 2019
High Plains Fun Run
Followed by a festival with food, sponsor tables and activities
Saturday 11 May 2019
Lustgarten Foundation Pancreatic Cancer Research Walk
Saturday 11 May 2019
Mother's Day 5K
Sign up dad and the kids too and make it a morning of activity the entire family can enjoy
Saturday 11 May 2019
Ordinary Mortals Triathlon
A reverse order (run-bike-swim) sprint distance early season triathlon for all us "Ordinary Mortals"
Saturday 11 May 2019
Women's Distance Festival 5K
Supporting Girls on the Run
Sunday 12 May 2019
Yappy Dog 8.6M
Race #5 of the SCR Prediction Series
Sunday 12 May 2019
Colorado Women's Classic
#runclassy
Sunday 12 May 2019
Denver Mother's Day 5K
Celebrate Mother's Day mom's way
Sunday 12 May 2019
Mermaid Run Boulder
A day to run, walk, skip or jog and celebrate with the entire family
Sunday 12 May 2019
Girls on the Run 5K
Tuesday 14 May 2019
Dash and Dine Series #5
After each race you'll have a chance to relax, kick back with friends, and enjoy the post race dinner!
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 18 May 2019
Elk Meadow 5k Trail Race
This 5K race leads runners throughout the rolling hills of Elk Meadow Open Space Park
Saturday 18 May 2019
Run to the Shrine
4-mile Run/Walk up to the Will Rogers Shrine of the Sun and back down into the Zoo
Saturday 18 May 2019
Colfax 5K
Your chance to be a part of marathon weekend but at a much shorter distance
Sunday 19 May 2019
Colfax Marathon and Half Marathon
Enjoy Denver's iconic landmarks
Sunday 19 May 2019
NORAD Trail Race
Full marathon, half marathon, and 4-mile
Sunday 19 May 2019
Miles for Smiles 5K
Following the 5K there is a 50-yard Adaptive Dash where disabled children will show off their speed
Tuesday 21 May 2019
Dash and Dine Series #6
After each race you'll have a chance to relax, kick back with friends, and enjoy the post race dinner!
Saturday 25 May 2019
High Drive Challenge
10-mile and 4-mile
Saturday 25 May 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 25 May 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Monday 27 May 2019
Bolder Boulder
America's All Time Best 10K
Monday 27 May 2019
Colorado Run
Moving to Memorial Day with a new beautiful race courses & great post-race party
Saturday 1 Jun 2019
Aspen 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
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 1 Jun 2019
Taste of Louisville
Saturday 1 Jun 2019
Denver Brain Tumor Walk
An opportunity for individuals and teams to honor and remember loved ones, connect with others interested in the brain tumor community and raise awareness
Sunday 2 Jun 2019
Colorado 13er
13er, 10k, 5k
Sunday 2 Jun 2019
Steamboat Marathon
Find out why the Steamboat Marathon was ranked as one of the "Top 10 Destination Marathons in North America"
Sunday 2 Jun 2019
Splash Dash 5K
Prepare to get wet as you wind through the adjacent Southglenn subdivision
Saturday 8 Jun 2019
Mt. Evans Ascent
The climb totals nearly 4,000 vertical feet - much of it above treeline
Saturday 8 Jun 2019
Mueller Marathon
Marathon and 25K at Mueller State Park
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 8 Jun 2019
Elk Meadow Trail Race 5.1M
This is a timed event that starts and ends near the Lewis Ridge Trail Head
Saturday 8 Jun 2019
Big Dog Brag
Colorado's Family-Friendly 5K & 2K Fun Mud Obstacle Run
Saturday 8 Jun 2019
Stepping Stone 5K
Fast, friendly 5K
Sunday 9 Jun 2019
Garden of the Gods 10 miler
Big Hills, Awesome Rocks, All Challenge
Thursday 13 Jun 2019
Summer Six Pack Series #1
1M/5k
Saturday 15 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 15 Jun 2019
Happy Camper Fun Run
13.1 Mile / 26.2 Mile / 50 Mile / 100 Mile
Saturday 15 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 16 Jun 2019
Fathers Day 5K/10K
Celebrate your Father, Brother, Son, Uncle, Grandfather, Husband or Friend with a great run or walk
Sunday 16 Jun 2019
Father's Day Classic
Come to race and stay for the FREE Father's Day Car Show
Sunday 16 Jun 2019
Desert RATS Kokopelli 150
Fruita, CO to Moab, UT
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 22 Jun 2019
Slacker Half Marathon
The highest downhill half marathon in the country and possibly the highest dowhill 4 Mile Run
Thursday 27 Jun 2019
Summer Six Pack Series #2
2M/5k
Saturday 29 Jun 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 29 Jun 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 29 Jun 2019
Big Dog Brag
Colorado's Family-Friendly 5K & 2K Fun Mud Obstacle Run
Thursday 4 Jul 2019
Longmont Half and 5k
Walkers and Runners of all abilities welcome
Thursday 4 Jul 2019
Let Freedom Run
1 mile fun run, 5k, 10k
Saturday 6 Jul 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 6 Jul 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 6 Jul 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Thursday 11 Jul 2019
Summer Six Pack Series #3
5k
Saturday 13 Jul 2019
Aspen Valley Marathon
A beautiful and scenice run along the Rio Grande Trail.
Saturday 13 Jul 2019
Sand Creek Half Marathon
Also 5K and 10K
Saturday 13 Jul 2019
Spartan Super 8-10 miles
Saturday 13 Jul 2019
White Ranch Trail Run
Enjoy a 10 K run or a 5K walk
Saturday 13 Jul 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 13 Jul 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Sunday 14 Jul 2019
Spartan Sprint 3-5 miles
Saturday 20 Jul 2019
Summer Splash Prairie Dog Half, 10K, and 5K
5K 10K Half Marathon
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
Thursday 25 Jul 2019
Summer Six Pack Series #4
4M/5k
Saturday 27 Jul 2019
Pikes Peak Ultra
50-mile, 50K, and 30K
Saturday 27 Jul 2019
Elevation 5K
Fundraiser for Conifer Lobos Unified Boosters and the Conifer Community Trails
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 27 Jul 2019
Kennebec Mountain Run
An alpine trail race held in the La Plata Mountains
Saturday 27 Jul 2019
Run For The Honor 5k
Let's get our deserving Veterans to Washington D.C. to see the memorials raised to honor their sacrifices and service
Sunday 28 Jul 2019
Barr Trail Mountain Race
One of the Front Range's historic summer mountain running events
Saturday 3 Aug 2019
Aspen 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
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 3 Aug 2019
Hears 5K Experience
Sunday 4 Aug 2019
XTERRA Castle Rock
5K, 10k, 20K
Sunday 4 Aug 2019
Evergreen Town Race
The fastest 5K ever run in Colorado was run on this course
Thursday 8 Aug 2019
Summer Six Pack Series #5
5M/5k
Saturday 10 Aug 2019
Aspen Backcountry Marathon
Boasting spectacular views of the Elk Mountains and the city of Aspen
Saturday 10 Aug 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 10 Aug 2019
Holy Cow Trail Stampede 5k/10k
Trail Stampede!
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
Thursday 22 Aug 2019
Summer Six Pack Series #6
10k/5k
Saturday 24 Aug 2019
Pikes Peak Ascent
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
Sunday 25 Aug 2019
Pikes Peak Marathon
America's ultimate challenge
Sunday 25 Aug 2019
Erie Half and 5k
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
Broncos 7K Denver
If you do one run in Colorado this year, this should be it
Sunday 1 Sep 2019
Cheap 5K
Celebrate cheap Americana - and eat pancakes!
Saturday 7 Sep 2019
Palmer Lake Half Marathon and 10K
Can you say, "Wide Open Spaces.."
Saturday 7 Sep 2019
Mountain RATS
Fun and adventurous trail running challenge
Saturday 7 Sep 2019
Aspen parkrun
Weekly Free 5km Timed Run
Saturday 7 Sep 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 7 Sep 2019
South Boulder Creek parkrun
Weekly Free 5km Timed Run
Saturday 14 Sep 2019
The South Seven
The 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
Saturday 14 Sep 2019
The Denver 5k
THE Denver 5k - Fun, Flat, Fast!
Sunday 15 Sep 2019
Farmers 5000
All funds from entry fees are given to various educational and special programs within Wheat Ridge High School
Saturday 21 Sep 2019
Fallfest 1M, 5K, 10K, Half and Full Marathon
Superior events from start to finish line.
Sunday 22 Sep 2019
XTERRA Half Marathon, 12K and 5K
The original trail marathon race at Colorado Springs' Cheyenne Mountain State Park
Saturday 28 Sep 2019
Pioneer Prairie Dog Half, 10k, & 5k
Part of the prairie dog half series
Saturday 28 Sep 2019
Foam Glow 5K
Glowing Foam and a ton of Blacklights all over the course
Saturday 28 Sep 2019
Haxtun Corn Festival 5K
Saturday 5 Oct 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 5 Oct 2019
Blacklight Run
A unique night 5K fun run focused less on speed and more on UV Neon Glowing fun with friends and family
Sunday 6 Oct 2019
K9 Canter
Costumed K9 Canter and 1 Mile Fun Run
Sunday 6 Oct 2019
Maple Grove Grizzly Growl 5K
This family-friendly race will raise money for the Maple Grove PTA
Sunday 6 Oct 2019
Hot Chocolate 15K/5K
Start and finish at Civic Center Park amongst Denver's biggest chocolate aficionados
Saturday 12 Oct 2019
Stone House (2x) Triple-Cross
The distance will be approximately 8.4 miles
Saturday 19 Oct 2019
The Great Trailhead Foot Race 10 Miler and 5k
At Bear Creek Lake Park
Sunday 20 Oct 2019
XTERRA Glenwood Springs
Half marathon 12K and 5K trail race
Sunday 27 Oct 2019
Westy Half and 5k
Part of the Hometown Race Series
Sunday 27 Oct 2019
Kooky-Spooky 1M, 5K, 10K and Half Marathon
Superior events from start to finish line.
Saturday 2 Nov 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 16 Nov 2019
Veterans Run 6.6 miler
Most is on single track with some crushed gravel through the neighborhood
Saturday 23 Nov 2019
10k Turkey Trek
Can you conquer the challenge?
Thursday 28 Nov 2019
Broomfield Turkey Day 5k/10k
Finisher's Medals!
Thursday 28 Nov 2019
EChO Annual Turkey Trot
Step Up to Stomp Out Hunger!
Saturday 7 Dec 2019
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 7 Dec 2019
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 4 Jan 2020
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 1 Feb 2020
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Saturday 7 Mar 2020
Nielson Challenge
A monthly 2-mile run with a cool handicap algorithm.
Sunday 12 Apr 2020
Hams and Hamstrings® 5K
Colorado's Easter Sunday 5K - every finisher gets a free mini Easter Ham
Sunday 3 May 2020
Dirt's Dig Deep 5k
Benefits Dirt's vocational training program, outreach programs and scholarships for individuals in need
