5K Races in Colorado — 2026

There are 298 5K races in Colorado scheduled for 2026. The next is the Bigfoot Half Marathon in Estes Park on April 25. Colorado 5K races run primarily April.

AdventHealth Race to Rebuild

Wed, May 20 · Lone Tree, CO Lone Tree

Race to Rebuild

From $0 Open

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8th Annual Angel Run at Red Leg Brewing

Fri, May 22 · Colorado Springs, CO Colorado Springs

5k Angel Run at Red Leg Brewing, Not Timed5k Angel Run at Red Leg Brewing, TimedVirtual Angel Run 5k +3

From $35 Open

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Run Wild! Rabies Free Africa 5K

Fri, May 22 · Virtual, CO Virtual

Run Wild! Rabies Free Africa 5K

From $45 Open

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Mile High Mile

Sat, May 23 · Boulder, CO Boulder

Elite OpenOpen Competitive WavesElite *Invitational +4

From $10 Open

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Memorial Day Run 5K/10K/13.1 DENVER/AURORA

Sat, May 23 · Centennial, CO Centennial

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration +3

From $30 Open

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Run for Mental Health 5K/10K/13.1 DENVER/AURORA

Sat, May 23 · Centennial, CO Centennial

Family Fun Run 1 Mile5K/10K/13.1 Eco-Registration (No Shirt)Virtual Run Registration (5K/10K/13.1) +3

From $30 Open

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The Narrow Gauge Races

Sun, May 24 · Durango, CO Durango

The Narrow Gauge 5KThe Narrow Gauge 10 Mile

From $30 Open Closing Soon

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Yampa River Fest 2026

Fri, May 29 · Steamboat Springs, CO Steamboat Springs

Fish Creek Kayak Race (Test)Kayak Rodeo - Charlie’s HoleKayak Slalom - Rich Weiss Park +11

From $0 Open Closing Soon 50 spots left

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M1LE Nation Challenge

Sat, May 30 · Anywhere, CO Anywhere

Team M1LE Nation- LIVE RaceM1LE Nation- LIVE RaceTeam M1LE Nation- Virtual Race +1

From $10 Open

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Trinidad Wellness Festival 5K

Sat, May 30 · Trinidad, CO Trinidad

Standard Registration

From $25 Open

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36th Annual Fire Hydrant 5K & Expo

Sat, May 30 · Fort Collins, CO Fort Collins

Closed

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2026 MTHCF 5K

Sat, May 30 · Fruita, CO Fruita

2026 Mike The Headless Chicken 5K

From $35 Open

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DRMABPsi 1–5K Walk, Run & Roll

Sat, May 30 · Denver, CO Denver

1kKids Run2k +3

From $10 Open

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Dash4Hope 2026

Sat, May 30 · Greeley, CO Greeley

Dash4Hope 2026

From $15 Open

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Weld Your Mettle Running Festival

Sat, May 30 · Eaton, CO Eaton

7K Ruck (4.3 Miles)7k walk or run (4.3 miles)14 Mile +10

From $35 Open Closing Soon

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Mile High Rescue Sixth annual 5K! Running for Rescues! & Summer Kick Off Party

Sun, May 31 · Englewood, CO Englewood

Running for Rescues! 1 Mile - Onsite - Girls on the Run or School Run Clubs1 Mile Fun Run - Virtual1 Mile Fun Run - Onsite +7

From $5 Open

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Love Hard 5k Fun Run

Mon, Jun 1 · Denver, CO Denver

Grand Rapids Love Hard 5kChicago Love Hard 5kSan Diego Love Hard 5k +5

From $35 Open

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The Red Schoolhouse Run

Thu, Jun 4 · Louisville, CO Louisville

The Red Schoolhouse Run

Closed

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SuperHeroes Run 5K/10K/13.1 DENVER/AURORA

Sat, Jun 6 · Centennial, CO Centennial

Family 1 Mile Fun Run5K/10K/13.1 Eco-Registration (No Shirt)5K Registration +3

From $30 Open

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Grand Valley Oncology - Life In Color 5K

Sat, Jun 6 · Grand Junction, CO Grand Junction

Grand Valley Oncology - Life In Color 5K (Timed run)Grand Valley Oncology - Life in Color 5k (Untimed walk)

From $35 Open

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Pueblo Levee Fun Run Walk

Sat, Jun 6 · Pueblo, CO Pueblo

Pueblo Levee Fun Run Walk

From $25 Open

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StepUp For Women And Recovery

Sat, Jun 6 · Fort Collins, CO Fort Collins

5k Run/Walk - In-Person

From $40 Open Closing Soon

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Berthoud Day 5K

Sat, Jun 6 · Berthoud, CO Berthoud

5K

From $30 Open Closing Soon

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2.2 for 22q Walk/Run/Ride 2026

Sat, Jun 6 · Anywhere, CO Anywhere

Virtual 2.2 for 22q 20262.2 for 22q Run/Walk/Ride (IN PERSON- ERIE, COLORADO)5k for 22q Run/Walk/Ride (IN PERSON- ERIE, COLORADO) +5

From $22 Open

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Aiden's Adventure 5k

Sat, Jun 6 · Colorado Springs, CO Colorado Springs

Aiden's Adventure 5k Kids 1-Mile Dash - NO SHIRT/MEDALAiden's Adventure 5k Kids 1-Mile DashAiden's Adventure 5k +2

From $10 Open

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J-Town Jog 5K and Kids 1 Mile Dash

Sat, Jun 6 · Johnstown, CO Johnstown

Kids 1 Mile Dash5K Run/Walk

From $20 Open Closing Soon 100 spots left

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The Valley Bottom Rio Trio

Sat, Jun 6 · Alamosa, CO Alamosa

Kids RaceTeen Relay TeamFamily Relay Team +3

From $15 Open 30 spots left

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Creede Donkey Dash

Sat, Jun 6 · Creede, CO Creede

Creede Donkey Dash 3 MilerCreede Donkey Dash 10 Miler

From $70 Open

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Run for Breast Cancer 5K/10K/13.1 DENVER/AURORA

Sat, Jun 6 · Centennial, CO Centennial

Family Fun Run 1 Mile5K RegistrationVirtual Run Registration (5K/10K/13.1) +3

From $30 Open

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RMRR June Trophy Series

Sun, Jun 7 · Denver, CO Denver

4km

From $10 Open

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The Big Run Presented by Brooks

Sun, Jun 7 · Denver, CO Denver

The Big Run 5K presented by Brooks

From $40 Open

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Colorado 13er (Half Marathon/10k/5k)

Sun, Jun 7 · Louisville, CO Louisville

5k10k13er

From $30 Open Closing Soon

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DU Dash Colorado

Sun, Jun 7 · Palmer Lake, CO Palmer Lake

5K10KYouth Dash

From $30 Open Closing Soon

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BRR All-Comers Summer Track & Field Series #1

Thu, Jun 11 · Boulder, CO Boulder

3000m100M200M +11

From $0 Open 15 spots left

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Tutu Dash 5K

Sat, Jun 13 · Broomfield, CO Broomfield

Kids Run5K Run/WalkVirtual 5K

From $20 Open

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The Springs Downhill Mile

Sat, Jun 13 · Colorado Springs, CO Colorado Springs

The Springs Downhill Mile

From $15 Open

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All-Out Summer Breeze

Sat, Jun 13 · Arvada, CO Arvada

VIRTUAL 5K5K10K +3

From $25 Open

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Stepping Stone 5K

Sat, Jun 13 · Littleton, CO Littleton

2.5K Shortcut5K5K Virtual Run

From $30 Open Closing Soon

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Sam's Rainbow Run

Sat, Jun 13 · Fort Collins, CO Fort Collins

Virtual 5k5k Run/WalkSTUDENT 5K

From $25 Open Closing Soon

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Howelsen Hill Trail Run

Sat, Jun 13 · Steamboat Springs, CO Steamboat Springs

4 MileHowelsen 8 Mile

From $25.75 Open

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Treat Trot - Denver

Sat, Jun 13 · Thornton, CO Thornton

5K10K15K +4

From $17 Open

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Summer Kickoff Kids Duathlon 2026

Sun, Jun 14 · Colorado Springs, CO Colorado Springs

Kids Duathlon

From $30 Open

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Treat Trot Colorado Springs

Sun, Jun 14 · Colorado Springs, CO Colorado Springs

5K10K15K +4

From $17 Open

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HRCA Happy Hour Half K

Fri, Jun 19 · Littleton, CO Littleton

Half K

From $35 Open

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Parker Parks and Recreation Dash Across the Dam Father’s Day 5K

Sat, Jun 20 · Parker, CO Parker

5K

From $40 Open

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Fatherhood 5k Family Run/Walk

Sat, Jun 20 · Colorado Springs, CO Colorado Springs

Family Pricing (Immediate Family)Adult 5kYouth 8-18 yrs

From $15 Open

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Sloth Run 5K/10K/13.1 DENVER/AURORA

Sat, Jun 20 · Centennial, CO Centennial

Family Fun Run 1 MileVirtual Run Registration (5K/10K/13.1)5K Registration +3

From $30 Open

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Mustang Mile 2026

Sat, Jun 20 · Kremmling, CO Kremmling

Little Joe- For the kids!Speedy Joe- For the most fierce competitorsRegular Joe- For the "off the couch" crew +1

From $30 Open

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Unicorn 5k (North)

Sat, Jun 20 · Thornton, CO Thornton

1/2 (ish) Mile Saunter - untimed5k Run/Walk

From $16 Open

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Havoc at HartFit OCR 3k

Sat, Jun 20 · Peyton, CO Peyton

KIDS HartFit HAVOC 1 MileHavoc at HartFit OCR 3k

From $29.99 Open 10 spots left

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