Upcoming Races Near Windsor, CO

Name: FireKracker 5k
Start: 2026-07-04
End: 2026-07-04
Location: Fort Collins

Quad Rock 25 & 50 Mile Trail Races

Bellvue, CO

Saturday, May 9th, 2026

Featured

Ultra

Trail

View details for race Quad Rock 25 & 50 Mile Trail Races

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10th Annual Fort Collin's Mother's Day 5K

Fort Collins, CO

Saturday, May 9th, 2026

View details for race 10th Annual Fort Collin's Mother's Day 5K

2026 Five Star 5K, Mile of Smiles, and Wellness...

Brighton, CO

Saturday, May 9th, 2026

1 Mile

View details for race 2026 Five Star 5K, Mile of Smiles, and Wellness Festival

Run For The Trees - 2 Mile Fun Run

Loveland, CO

Saturday, May 9th, 2026

View details for race Run For The Trees - 2 Mile Fun Run

Run for the Trees - BSBF 2-Mile Run

Loveland, CO

Saturday, May 9th, 2026

View details for race Run for the Trees - BSBF 2-Mile Run

Colorado Women's Classic - Westminster

Westminster, CO

Sunday, May 10th, 2026

10K

10 Miles

View details for race Colorado Women's Classic - Westminster

Denver Mother's Day 5K

Denver, CO

Sunday, May 10th, 2026

View details for race Denver Mother's Day 5K

Hometown Half Marathon & 5k/10k - Denver

Denver, CO

Sunday, May 10th, 2026

10K

Half

View details for race Hometown Half Marathon & 5k/10k - Denver

Know. Grow. GO RUN. 5K

Loveland, CO

Friday, May 15th, 2026

Trail

View details for race Know. Grow. GO RUN. 5K

Girls on the Run 5K at Colfax - Running Buddies...

Denver, CO

Saturday, May 16th, 2026

View details for race Girls on the Run 5K at Colfax - Running Buddies and Volunteers

Growing Home - Colfax Fundraiser

Denver, CO

Saturday, May 16th, 2026

View details for race Growing Home - Colfax Fundraiser

Girls on the Run Rockies Colfax SoleMates 2026

Denver, CO

Sunday, May 17th, 2026

Marathon

Half

View details for race Girls on the Run Rockies Colfax SoleMates 2026

Miles for Smiles 5K

Arvada, CO

Sunday, May 17th, 2026

Trail

View details for race Miles for Smiles 5K

Healing Warriors Program 2026 Annual 5K Fun Run

Fort Collins, CO

Sunday, May 17th, 2026

View details for race Healing Warriors Program 2026 Annual 5K Fun Run

Mile High Mile

Boulder, CO

Saturday, May 23rd, 2026

1 Mile

View details for race Mile High Mile

Youth TNT Program

Fort Collins, CO

Tuesday, May 26th, 2026

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Race Day Support Add-On

Boulder, CO

Wednesday, May 27th, 2026

View details for race Race Day Support Add-On

DRMABPsi 1–5K Walk, Run & Roll

Denver, CO

Saturday, May 30th, 2026

View details for race DRMABPsi 1–5K Walk, Run & Roll

Dash4Hope 2026

Greeley, CO

Saturday, May 30th, 2026

View details for race Dash4Hope 2026

Weld Your Mettle Running Festival

Eaton, CO

Saturday, May 30th, 2026

Ultra

Marathon

View details for race Weld Your Mettle Running Festival

Global Running Day with Altra

Denver, CO

Wednesday, June 3rd, 2026

View details for race Global Running Day with Altra

StepUp For Women And Recovery

Fort Collins, CO

Saturday, June 6th, 2026

View details for race StepUp For Women And Recovery

Berthoud Day 5K

Berthoud, CO

Saturday, June 6th, 2026

View details for race Berthoud Day 5K

J-Town Jog 5K and Kids 1 Mile Dash

Johnstown, CO

Saturday, June 6th, 2026

1 Mile

View details for race J-Town Jog 5K and Kids 1 Mile Dash

Crazy Legs 10k+ Trail Run

Loveland, CO

Sunday, June 7th, 2026

10K

View details for race Crazy Legs 10k+ Trail Run

Flamingo Day 5K

Denver, CO

Sunday, June 7th, 2026

View details for race Flamingo Day 5K

RMRR June Trophy Series

Denver, CO

Sunday, June 7th, 2026

Fast

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The Big Run Presented by Brooks

Denver, CO

Sunday, June 7th, 2026

View details for race The Big Run Presented by Brooks

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

Louisville, CO

Sunday, June 7th, 2026

Half

10K

Trail

View details for race Colorado 13er (Half Marathon/10k/5k)

All-Out Summer Breeze

Arvada, CO

Saturday, June 13th, 2026

Half

10K

Trail

View details for race All-Out Summer Breeze

Guardian Games

Loveland, CO

Saturday, June 13th, 2026

View details for race Guardian Games

Tutu Dash 5K

Broomfield, CO

Saturday, June 13th, 2026

1 Mile

Trail

View details for race Tutu Dash 5K

Treat Trot Denver

Denver, CO

Saturday, June 13th, 2026

10K

15K

View details for race Treat Trot Denver

Treat Trot - Denver

Thornton, CO

Saturday, June 13th, 2026

10K

15K

View details for race Treat Trot - Denver

Sierra's 5K Run/Walk Race Against Meningitis

Loveland, CO

Saturday, June 20th, 2026

View details for race Sierra's 5K Run/Walk Race Against Meningitis

Muddy Dash | Denver 2026

Dacono, CO

Saturday, June 20th, 2026

View details for race Muddy Dash | Denver 2026

Unicorn 5k (North)

Thornton, CO

Saturday, June 20th, 2026

View details for race Unicorn 5k (North)

Red, White and Brew 5k, 10k & Half Marathon

Windsor, CO

Saturday, June 20th, 2026

10K

Half

View details for race Red, White and Brew 5k, 10k & Half Marathon

Father's Day Classic 10k, 5k, & 1 Mile

Arvada, CO

Sunday, June 21st, 2026

10K

1 Mile

View details for race Father's Day Classic 10k, 5k, & 1 Mile

Juneteenth Fun Run 5K

Denver, CO

Sunday, June 21st, 2026

View details for race Juneteenth Fun Run 5K

Sunset Trail Running Festival

Boulder, CO

Sunday, June 21st, 2026

12K

Trail

View details for race Sunset Trail Running Festival

14th Annual Buffs4Life Kyle MacIntosh Memorial ...

Boulder, CO

Sunday, June 21st, 2026

View details for race 14th Annual Buffs4Life Kyle MacIntosh Memorial 5K Run/Walk

The Red Schoolhouse Run

Louisville, CO

Tuesday, June 23rd, 2026

View details for race The Red Schoolhouse Run

Denver Pride 5K

Denver, CO

Saturday, June 27th, 2026

View details for race Denver Pride 5K

Pearl Street Mile

Boulder, CO

Saturday, June 27th, 2026

1 Mile

View details for race Pearl Street Mile

Timberview Trail Run

Bellvue, CO

Saturday, June 27th, 2026

Trail

View details for race Timberview Trail Run

Let Freedom Run 5k/10k - Louisville

Louisville, CO

Saturday, July 4th, 2026

10K

View details for race Let Freedom Run 5k/10k - Louisville

Avery Brewing Co. 4K on the 4th

Boulder, CO

Saturday, July 4th, 2026

Fast

View details for race Avery Brewing Co. 4K on the 4th

Red Feather Lakes 3.6 Mile Fun Run

Red Feather Lakes, CO

Saturday, July 4th, 2026

View details for race Red Feather Lakes 3.6 Mile Fun Run

FireKracker 5k

Fort Collins, CO

Saturday, July 4th, 2026

1 Mile

View details for race FireKracker 5k

Explore more in Windsor, CO

Distances:

5K 10K Half Marathon Marathon

Months:

May June July

Tags:

Trail Boston Qualifiers Fast Courses

State:

All Colorado races

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