5k in Boulder, Colorado | 2026-2027

Lucky Leprechaun 5K [teamboco.com] [Register at runsignup.com]
Sun, Mar 15, 2026 at 9:00 AM
Description
Join us on Sunday March 15th, for our Lucky Leprechaun 5K Fun Run taking place at Twisted Pine Brewing Company - 3201 Walnut St Suite A, Boulder, CO 80301.
- This race is a Bolder Boulder Qualifier!...
Join us on Sunday March 15th, for our Lucky Leprechaun 5K Fun Run taking place at Twisted Pine Brewing Company - 3201 Walnut St Suite A, Boulder, CO 80301.
- This race is a Bolder Boulder Qualifier!
The Lucky Leprechaun Fun Run celebrates the origins of Saint Patrick's Day, or the Feast of Saint Patrick, which is a cultural and religious celebration held on the 17th of March each year. The holiday has evolved into a world wide celebration of Irish culture with parades, special foods, music, dancing, drinking and a whole lot of green, so come on out and celebrate this great Irish tradition.

We will have Irish Band “Avourneen”, and Boulder’s “Mc Teggart Irish Dancers” keeping everyone entertained, and Savory Cuisines Catering will have a delicious Irish breakfast burrito for everyone to enjoy post race, along with a choice of Twisted Pine Brewing Company beer:
- Irish Red Ale
- Dublin Magic Nitro Stout
- Green Leprechaun (Mexican Lager)
“Twill” be a fine morning to celebrate, this side of the rainbow, so join your family and friends and dress up in your luckiest gear and join a sea of green running here in Boulder.

To get your FREE T-Shirt, your must register BEFORE WEDNESDAY JANUARY 28.
- Baby strollers ARE allowed.
- NO Dogs are permitted in the race.
- There are NO race refunds.
5k Fun Run Run
3201 Walnut St, Boulder, Colorado, 80301, United States
OpenStreetMap Google Maps

4-pack registration 2026 [dashndine5k.com] [Register at raceroster.com]
Tue, Apr 28, 2026 at 6:30 PM
Description
Pre-purchase your race entries and save time and money!
- You can pick up your bib at the registration tent at each event.
- Buying the multipack gets you an entry and dinner for each race you attend.
5k Run
North 51st Street, Boulder, Colorado, 80301, United States
OpenStreetMap Google Maps
Dash & Dine 5k #1 [dashanddine5k.com] [Register at raceroster.com]
Wed, Apr 29, 2026 at 6:30 PM

Description

The Dash & Dine 5k is Boulder's favorite spring tune-up race series. This family-friendly race is a series of four races Tuesday nights May held at the beautiful Boulder Reservoir in Boulder, CO....

The Dash & Dine 5k is Boulder's favorite spring tune-up race series. This family-friendly race is a series of four races Tuesday nights May held at the beautiful Boulder Reservoir in Boulder, CO.

Race hard, then stick around for series awards and giveaways while we enjoy more great food from a local favorite.

Start time: 6:30 PM

If you would like a little extra space at the start line, you are welcome to take your time and start after everyone else in that wave has set off since we will have chip timing.

Race Day Registration will be available for $40 but ordering food is so much easier when you register ahead of time :)

If you are or have recently been sick or believed to be exposed to COVID, please stay home. We are happy to transfer your registration to another date.

5k Run
North 51st Street, Boulder, Colorado, 80301, United States
OpenStreetMap Google Maps
Friends of the National Center Science Stride 5K [friendsofthenationalcenter.org] [Register at runsignup.com]
Fri, May 01, 2026 at 9:00 AM

Description

The Friends of the National Center Science Stride 5K will hold its second annual run/walk in the Spring of 2026.

The Science Stride 5k brings together our community for a common cause: Inspiring the...

The Friends of the National Center Science Stride 5K will hold its second annual run/walk in the Spring of 2026.

The Science Stride 5k brings together our community for a common cause: Inspiring the next generation of scientists! This event provides an excellent opportunity for everyone who believes in the importance of STEM education to come together and support Friends of the National Center. Runners and walkers of all abilities are encouraged to join!

Are you a remote employee or someone who wants to support our work from afar? Please sign up for our Virtual 5K! You'll run or walk and log your time. You can even join a team and receive a race t-shirt, just like our in person participants!

Your participation in the Science Stride 5K directly supports Friends’ mission is to inspire, support, and educate the next generation of scientists and researchers. Friends is committed to addressing the intricate challenges of our Earth system by ensuring that the cutting-edge research and innovation at UCAR and NSF NCAR are carried forward into the future.

We’d love for you and your organization to get more involved with the great work of UCAR and NSF NCAR via Friends of the National Center. If you are interested in supporting the next generation of scientists solving important global problems, please consider sponsoring the Science Stride 5K! The Science Stride 5K is an awesome community-focused event and a great opportunity for some team-building and to demonstrate your commitment to science education. Click on our Science Stride 5K Sponsorship Packet to learn more!

We can’t wait to see you at the Science Stride!

3.1 Miles 5k Run Virtual Walk
5275 Reservoir Rd, Boulder, Colorado, 80301, United States
OpenStreetMap Google Maps
Dash & Dine 5k #4 - Series Finale [dashanddine5k.com] [Register at raceroster.com]
Wed, May 20, 2026 at 6:15 PM

Description

The Dash & Dine 5k is Boulder's favorite spring tune-up race series. This family-friendly race is a series of four races Tuesday nights May held at the beautiful Boulder Reservoir in Boulder, CO....

The Dash & Dine 5k is Boulder's favorite spring tune-up race series. This family-friendly race is a series of four races Tuesday nights May held at the beautiful Boulder Reservoir in Boulder, CO.

It’s the Season Finale!

And it promises to be the biggest and best so far so bring a friend (or three)!!

It’s going to be a great big party. Race hard, then stick around for series awards and giveaways while we enjoy more great food from a local favorite.

Start time: 6:30

Race Day Registration will be available for $40 but ordering food is so much easier when you register ahead of time :)

5k Run
North 51st Street, Boulder, Colorado, 80301, United States
OpenStreetMap Google Maps
BRR All-Comers Summer Track & Field Series #3 [boulderroadrunners.org] [Register at runsignup.com]
Thu, Jul 09, 2026 at 4:30 PM

Description

NO Race Day Registrations

Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment.

We are back...

NO Race Day Registrations

Fun for all, from newcomers of any age racing for the first time to veteran competitors looking to test their fitness, all in a friendly, welcoming environment.

We are back at CU Potts Field again offering a full schedule of events.

BRR Members Save $5 off adult pricing!

Use the email address associated with your membership. Non-Members can easily join in the registration process to immediately save.

5k
Boulder, Colorado, 80305, United States
OpenStreetMap Google Maps
Boulderthon [finishers.com]
Sun, Sep 27, 2026

5k 10k Half Marathon Marathon Run
Boulder, Colorado, United States
OpenStreetMap Google Maps

7 events in Boulder, Colorado

Description

Description

Description

Description

Description

Description

Local Clubs & Organizations