The West End 4k, extends the popular 3k event, which was last held in 2013. The course is nearly the same, and it is great for spectators since it is two loops up and down Pearl Street. In addition to the vendors giving away goodies for free, there are plenty of options for food and drink in the West Pearl neighborhood!

The popular Corporate Challenge is part of the West End 4k this year. Gather your colleagues! Teams can include as many people as you would like, but the first three finishers score.

Registration Fees

Open/ Elite Men's and Women's 4K

May 2 - Jul 26 Current Price $25.00

Corporate Challenge 4K

May 2 - Jul 26 Current Price $25.00

Kid's 1K

May 2 - Jul 26 Current Price $15.00



Overall M/F 1st: $250, 2nd: $150, 3rd: $75 

Overall Masters M/F: $100

10 year age group awards winners: $25 gift certiciates

Must be in Elite wave to be eligible for prize money. Age group winners may run in elite wave or open.

Series Prizes will go to the top man and woman (TBD whether that will be based on time or place)

15% Off New Balance

Bring your race bib into the Flatirons Running store to receive 15% off any New Balance products. This offer is good for any of the Downtown Series races. Valid through August 31, 2017.


Location: 11th and Pearl Street, Boulder, CO

Runners will run two loops, beginning near 11th and Pearl, turning around near 3rd Street and cruising downhill back to the start. Since it is a 2-loop course, it is extremely spectator friendly.



Available on the street or in the downtown parking garages.

Event Schedule

  • July 28 05:00 PM EDT - Packet pick-up

  • July 28 06:00 PM EDT - Kids 1K

  • July 28 06:30 PM EDT - Corporate Challenge 4K

  • July 28 07:00 PM EDT - Open Men's and Women's 4K

  • July 28 07:30 PM EDT - Elite Men's and Women's 4K

Contact Information

Event Location

14th & Pearl, Boulder, CO, United States

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