Virtual 5K5K
Running Races in Colorado
340 upcoming races in Colorado
Browse by City
Denver 43 Centennial 37 Colorado Springs 36 Fort Collins 24 Littleton 15 Arvada 12 Steamboat Springs 12 Westminster 10 Loveland 10 Durango 9 Buena Vista 8 Aurora 8 Aspen 8 Boulder 7 Golden 7 Thornton 7 Parker 6 Bellvue 6 Pueblo 5 Longmont 5 Windsor 5 Highlands Ranch 5 Louisville 5 Manitou Springs 4 Grand Junction 4 Brighton 4 Salida 4 Castle Rock 4 Estes Park 3 Frederick 3
5k10kHalf Marathon
RMRR April Trophy Series Race
5kHalf MarathonHalf Marathon Relay
50 Mile (Relay)50 Mile (Individual)100 Mile (Relay)100 Mile (Individual)
PreK 4/5 Yr Old - 75 Yard DashPreK 2/3 Yr Old - 50 Yard DashSingle Day Walk Up Week 5Single Day Walk Up Week 4Single Day Walk Up Week 3Single Day Walk Up Week 2Single Day Walk Up Week 1Challenger Division - 75 Yard Dash6th to 8th Grade - 1 Mile4th & 5th Grade - 1 Mile2nd & 3rd Grade - 1/2 MileKindergarten & 1st Grade - 1/4 Mile
Woody's Tortoise and Hare 5K
Sky Rim Duathlon
VIRTUAL 5K5KVIRTUAL 10K10KVIRTUAL Half MarathonHalf Marathon
1 Mile5K10KKid's DashVirtual RaceVolunteer then RunHalf Marathon
Earth Day 5K
Kids Fun Run5k10kHalf Marathon
Half Marathon
1 Mile5K10KKid's DashVolunteer Then RunHalf MarathonVirtual Race
All Access Pass (includes 5k Run or Walk, Ninja course & Fun Run)Fairmount 5K RunFairmount 5k WalkVirtual 5k Run/WalkFairmount Flash (Fun Run) & Ninja Course (ages 5+)Fairmount Flash (Fun Run)Ninja Course (ages 5+)
Run Wild! Rabies Free Africa 5K
Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration (5K/10K/13.1)5K Registration10K Registration13.1 Half-Marathon Registration
Manion WOD Workout
Family 1 Mile Fun Run5K RegistrationVirtual Run Registration5K/10K/13.1 Eco-Registration (No Shirt)10K Registration13.1 Half-Marathon Registration
5K (Adult 13 and up)5K (Child 6-12)5K (Child 5 and Under)
Strut for Mutts 2026
Manion WOD Workout
Half MarathonMarathon50K Ultra MarathonVirtual Half MarathonVirtual Full MarathonVirtual 50K
5K Run/WalkHalf Marathon
SOAR 5K RunSOAR 5K Walk
5K Run10M Run10K Run
2026 Flying Pig 5K
5k1/2 Mile(ish) Saunter
5kHalf-Marathon
50-yard dash1.2-mile run (grades 4-8)1.2-mile run (grades 3 & under)
Manion WOD WorkoutManion WOD Ruck Workout
#3 May 12#1 April 28#2 May 5#4 May 194-Pack Series Bundle
Everest Challenge
Kids 15 and under 5k Walk/Run5K Walk/Run15 Mile Bike RideKids 15 and under 15 mile Bike Ride
9th edition CollaBEERation Brew Fest Party - Brew Fest Attendee Only9th edition CollaBEERation 5k & Brew Fest Party - WAVE A (Running 25 Minutes & Under)9th edition CollaBEERation 5k & Brew Fest Party - WAVE B (Run/Walk Over 25+ Minutes)
Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K RegistrationVirtual Run Registration10K Registration13.1 Half-Marathon Registration
4M Trail Races8M Trail RaceVirtual Race25K Trail Race50K Trail RaceVirtual 50K
1 Mile Fun RunAdult 5K5K Students/Youth 18 & Under5K Family Registration (up to 5 family members at same address)5K Foster Family Registration (up to 5 family members at same address)
High Line Canal Run 5KHigh Line Canal Run 10KHigh Line Canal Run Both 5K & 10K
2-4 PersonSolo5-8 Person
Family 1 Mile Fun RunVirtual Run Registration5K/10K/13.1 Eco-Registration (No Shirt)5K Registration10K Registration13.1 Half-Marathon Registration
5k5mi
5kHalf Marathon
Rise Against Suicide - Emerge 5K
5k Run8.4 Mile Run
1-Mile - 20 years & older1-Mile - 12 & under1-Mile - 13 to 19 years800m - 13 to 19 years800m - 20 years & older800m - 12 & under5,000m - 20 years & older5,000m - 13 to 19 years800m & 1-Mile - 13 to 19 years800m & 5,000m - 13 to 19 years1-Mile & 5,000m - 13 to 19 years1-Mile & 5,000 - 20 years & older800m, 1-Mile & 5,000m - 20 years & older800m & 5,000m - 20 years & older800m & 1-Mile - 20 years & older800m, 1-Mile & 5,000m - 13 to 19 years800m & 1-Mile - 12 & Under
5K10KHalf MarathonMarathon
Virtual Run for the Trees Fun RunRun For The Trees Fun Run
5K Run/Walk
Quad Rock 25Quad Rock 50