The West End 4k, extends the popular 3k event. 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 again this year. Gather your colleagues! Teams can include as many people as you would like, but the first three finishers score.

Packet pick-up will be available at Flatirons Running Inc (629 S Broadway) from 4-6 pm Wednesday, July 26th and on race day near the start/finish from 5-6 pm.

Race Schedule

Thursday, July 27th

  • 5:00PM - Packet pick-up
  • 6:00PM - Kids 1K
  • 6:30PM - Corporate Challenge 4K
  • 7:00PM - Open Men's and Women's 4K
  • 7:30PM - Elite Men's and Women's 4K

Race Registration

  • $25/30, kids $15

West End 4K Logo

The Course

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. View a map of parking garage locations.


10-year age group winners: $25 gift certificate
Overall M/F 1st: $250, 2nd: $150, 3rd: $75
Overall Masters M/F: $100

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)

Aid Stations

There will be one aid station near the start/finish/turn-around.

Glen Delman Photography will be on site to capture many beautiful moments.

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.

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