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Get the appColorado has 309 upcoming running events across distances like 0K, 1K, 2K, 3K, 5K, 6K, 7K, 10K, 15K, 20K, 21K, 24K, 25K, 34K, 42K, 45K, 56K, 82K, 161K, 163K, 193K. Recent additions include Grin & Bear It, Akron Trail Marathon, Estes Park's Backyard Ultra.
309 events
11
Grin & Bear It
Sat, Jul 11, 2026Crested Butte, United States
11
Akron Trail Marathon
Sat, Jul 11, 2026Akron, United States
11
Estes Park's Backyard Ultra
Sat, Jul 11, 2026Estes Park, United States
12
Soap Box Derby 5K
Sun, Jul 12, 2026Akron, United States
12
Rocky Mountain State Games - Swim / Run
Sun, Jul 12, 2026Colorado Springs, United States
12
Boulder Peak Triathlon
Sun, Jul 12, 2026Boulder, United States
12
Ned Gravel
Sun, Jul 12, 2026Nederland, United States
12
Rocky Mountain State Games - Swim / Run
Sun, Jul 12, 2026Colorado Springs, United States
12
Heatwave Half Marathon - Colorado Springs
Sun, Jul 12, 2026Colorado Springs, United States
16
Run Rocky Trails Camp
Thu, Jul 16, 2026Estes Park, United States
17
Ouray 100 Mile Endurance Run
Fri, Jul 17, 2026Ouray, United States
17
Expedition Maroon Bells
Fri, Jul 17, 2026Aspen, United States
17
High Lonesome 100
Fri, Jul 17, 2026Nathrop, United States
18
Summer Splash Prairie Dog Half, 10k, & 5k
Sat, Jul 18, 2026Castle Rock, United States
18
Eagle 5K & 10K at Loyd H Roland Memorial Park
Sat, Jul 18, 2026Akron, United States
18
Berthoud Gastro-Dash 10k
Sat, Jul 18, 2026Berthoud, United States
18
2026 OCA Colorado 5K Panda Run
Sat, Jul 18, 2026Denver, United States
18
FoCo Fondo p/b Fat Tire
Sat, Jul 18, 2026Fort Collins, United States
18
Powderhorn Mountain Trail Climb 5k & 15k
Sat, Jul 18, 2026Mesa, United States
18
TransRockies Run Charity Bibs
Sat, Jul 18, 2026Buena Vista, United States
18
Dr. Ed Morgan/Kiwanis Grand Slam 4 Miler 2026 Run/Walk 2026
Sat, Jul 18, 2026Louisville, United States
19
TransRockies Run - Pass to Pub
Sun, Jul 19, 2026Leadville, United States
19
Barr Trail Mountain Race
Sun, Jul 19, 2026Manitou Springs, United States
19
Rocky Mountain State Games
Sun, Jul 19, 2026Colorado Springs, United States
19
Floyd Hill Dash
Sun, Jul 19, 2026Idaho Springs, United States
19
27th Annual Donor Dash
Sun, Jul 19, 2026Denver, United States
19
Hayden Fresh Farm Fondo
Sun, Jul 19, 2026Steamboat Springs, United States
19
One Is Too Many: Veteran Suicide Awareness 5k and Kids Run
Sun, Jul 19, 2026Greeley, United States
23
Volunteer Sign-up - Stroke & Stride #7 Online Registration
Thu, Jul 23, 2026Boulder, United States
23
Stroke & Stride #7
Thu, Jul 23, 2026Boulder, United States