Discover Colder Boulder 5k Events & Activities in Boulder, CO

2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2
Sun, Mar 8, 1:00 PM
Boulder · Boulder
2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2
Sun, Mar 8, 1:00 PM
Boulder · Boulder
2026 Left Hand Brewing Half Marathon & 5k | CO Brewery Running Series
Sun, Apr 19, 7:30 AM
Longmont · Left Hand Brewing Company
2026 Left Hand Brewing Half Marathon & 5k | CO Brewery Running Series
Sun, Apr 19, 7:30 AM
Longmont · Left Hand Brewing Company
Give Thanks 1M 5K 10K 13.1 26.2
Sat, Mar 28, 1:00 PM
Boulder · Boulder
Give Thanks 1M 5K 10K 13.1 26.2
Sat, Mar 28, 1:00 PM
Boulder · Boulder
2026 First Responders 1M 5K 10K 13.1 26.2
Sat, Mar 28, 1:00 PM
Boulder · Boulder
2026 First Responders 1M 5K 10K 13.1 26.2
Sat, Mar 28, 1:00 PM
Boulder · Boulder
May the 4th Be With You 5k | Westminster | CO Brewery Running Series
Sun, May 3, 10:00 AM
Westminster · Frolic Brewing Company
May the 4th Be With You 5k | Westminster | CO Brewery Running Series
Sun, May 3, 10:00 AM
Westminster · Frolic Brewing Company
Luck of the Irish 5K
Tue, Mar 17, 1:00 PM
Denver · Denver
Luck of the Irish 5K
Tue, Mar 17, 1:00 PM
Denver · Denver
Irish I Had A Beer 5k @ BrewDog Denver | 2026 CO Brewery Running Series
Sun, Mar 15, 10:00 AM
Denver · BrewDog Denver
Irish I Had A Beer 5k @ BrewDog Denver | 2026 CO Brewery Running Series
Sun, Mar 15, 10:00 AM
Denver · BrewDog Denver
Running Up That Hill 1M 5K 10K 13.1 26.2 - Now Only $16!
Sat, Mar 28, 1:00 PM
Boulder · Boulder
Running Up That Hill 1M 5K 10K 13.1 26.2 - Now Only $16!
Sat, Mar 28, 1:00 PM
Boulder · Boulder
Stem Ciders at Acreage 5k | Lafayette | 2026 CO Brewery Running Series
Sat, May 16, 10:00 AM
Lafayette · Acreage by Stem Ciders
Stem Ciders at Acreage 5k | Lafayette | 2026 CO Brewery Running Series
Sat, May 16, 10:00 AM
Lafayette · Acreage by Stem Ciders
4th Annual Western Black Belt Conference
Fri, May 15, 6:00 PM
Boulder · Quest Self-Defense Boulder
4th Annual Western Black Belt Conference
Fri, May 15, 6:00 PM
Boulder · Quest Self-Defense Boulder
Be Kind to Your Mind 1M 5K 10K 13.1 26.2
Sat, May 2, 1:00 PM
Boulder · Boulder
Be Kind to Your Mind 1M 5K 10K 13.1 26.2
Sat, May 2, 1:00 PM
Boulder · Boulder
2026 Be Brave 1M 5K 10K 13.1 26.2
Sat, Mar 7, 1:00 PM
Denver · Denver
2026 Be Brave 1M 5K 10K 13.1 26.2
Sat, Mar 7, 1:00 PM
Denver · Denver
Mother's Day 1M 5K 10K 13.1 26.2
Sun, May 10, 1:00 PM
Boulder · Boulder
Mother's Day 1M 5K 10K 13.1 26.2
Sun, May 10, 1:00 PM
Boulder · Boulder
Consider the Wildflowers 1M 5K 10K 13.1 26.2
Sunday at 1:00 PM
Denver · Denver
Consider the Wildflowers 1M 5K 10K 13.1 26.2
Sunday at 1:00 PM
Denver · Denver
2026 Day of the Dead 1M 5K 10K 13.1 26.2
Sat, Mar 14, 1:00 PM
Denver · Denver
2026 Day of the Dead 1M 5K 10K 13.1 26.2
Sat, Mar 14, 1:00 PM
Denver · Denver
I'm Your Huckleberry 1M 5K 10K 13.1 26.2
Saturday at 1:00 PM
Denver · Denver
I'm Your Huckleberry 1M 5K 10K 13.1 26.2
Saturday at 1:00 PM
Denver · Denver
2026 International Women's Day 1M, 5K, 10K, 13.1, 26.2
Sun, Mar 8, 1:00 PM
Denver · Denver
2026 International Women's Day 1M, 5K, 10K, 13.1, 26.2
Sun, Mar 8, 1:00 PM
Denver · Denver
Memorial Day 1M 5K 10K 13.1 26.2
Mon, May 25, 1:00 PM
Boulder · Boulder
Memorial Day 1M 5K 10K 13.1 26.2
Mon, May 25, 1:00 PM
Boulder · Boulder
2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2
Sun, Mar 8, 1:00 PM
Denver · Denver
2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2
Sun, Mar 8, 1:00 PM
Denver · Denver

2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2

2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2

2026 Left Hand Brewing Half Marathon & 5k | CO Brewery Running Series

2026 Left Hand Brewing Half Marathon & 5k | CO Brewery Running Series

Give Thanks 1M 5K 10K 13.1 26.2

Give Thanks 1M 5K 10K 13.1 26.2

2026 First Responders 1M 5K 10K 13.1 26.2

2026 First Responders 1M 5K 10K 13.1 26.2

May the 4th Be With You 5k | Westminster | CO Brewery Running Series

May the 4th Be With You 5k | Westminster | CO Brewery Running Series

Luck of the Irish 5K

Luck of the Irish 5K

Irish I Had A Beer 5k @ BrewDog Denver | 2026 CO Brewery Running Series

Irish I Had A Beer 5k @ BrewDog Denver | 2026 CO Brewery Running Series

Running Up That Hill 1M 5K 10K 13.1 26.2 - Now Only $16!

Running Up That Hill 1M 5K 10K 13.1 26.2 - Now Only $16!

Stem Ciders at Acreage 5k | Lafayette | 2026 CO Brewery Running Series

Stem Ciders at Acreage 5k | Lafayette | 2026 CO Brewery Running Series

4th Annual Western Black Belt Conference

4th Annual Western Black Belt Conference

Be Kind to Your Mind 1M 5K 10K 13.1 26.2

Be Kind to Your Mind 1M 5K 10K 13.1 26.2

2026 Be Brave 1M 5K 10K 13.1 26.2

2026 Be Brave 1M 5K 10K 13.1 26.2

Mother's Day 1M 5K 10K 13.1 26.2

Mother's Day 1M 5K 10K 13.1 26.2

Consider the Wildflowers 1M 5K 10K 13.1 26.2

Consider the Wildflowers 1M 5K 10K 13.1 26.2

2026 Day of the Dead 1M 5K 10K 13.1 26.2

2026 Day of the Dead 1M 5K 10K 13.1 26.2

I'm Your Huckleberry 1M 5K 10K 13.1 26.2

I'm Your Huckleberry 1M 5K 10K 13.1 26.2

2026 International Women's Day 1M, 5K, 10K, 13.1, 26.2

2026 International Women's Day 1M, 5K, 10K, 13.1, 26.2

Memorial Day 1M 5K 10K 13.1 26.2

Memorial Day 1M 5K 10K 13.1 26.2

2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2

2026 Race Alotl for the Axolotl 1M 5K 10K 13.1 26.2

Things to do around Boulder

Trends in Boulder

1. Valentines day

2. Stand up comedy

3. Chinese new year festival

4. Sound bath

5. Speed dating events

6. Electronic music

7. Singles party

8. Job fairs

9. Breathwork

10. Live music

11. Kids events today

12. Drag