Races 10K · Boulder, USA
Bolder Boulder 10K
Bolder Boulder 10K is a rolling 10K in Boulder, USA, held each May. Memorial Day tradition at 1,600m altitude — rolling streets into a packed stadium finish. Late May is 8-18C; thin air is the story. The rises around Boulder are small but relentless — train on similar terrain and race by effort, not pace.
Page rebuilt 2026-10-01 · race facts not independently verified — confirm dates and entries on the official race site
When
May
every year
Course
rolling
10K
Conditions
Late May is 8-18C; thin air is the story.
Racing this course well
Memorial Day tradition at 1,600m altitude — rolling streets into a packed stadium finish.
The rises around Boulder are small but relentless — train on similar terrain and race by effort, not pace.
Pick your goal for Boulder
Pace charts, weekly structure and timelines for the most common 10K goals:
We don’t hold a confirmed date for this edition, so any countdown comes from the date you enter here.
Build your training around Bolder Boulder 10K.
RunV works backwards from race day to today and rearranges the weeks when life interrupts. It does not adapt to this specific course — the pacing guidance above is where the course knowledge is.
Everything above stays free and complete — this is an optional next step, not a paywall.
Asked often
- When is the Bolder Boulder 10K?
- It is held each May in Boulder, USA. Check the official Bolder Boulder 10K site for the exact date and entry windows.
- Is the Bolder Boulder 10K course flat?
- Memorial Day tradition at 1,600m altitude — rolling streets into a packed stadium finish.
- How should I train for the Bolder Boulder 10K?
- Build for the course you'll actually race at the Bolder Boulder 10K: rolling terrain, May conditions. RunV generates a plan for your goal time and rebuilds it every time life interrupts the Boulder build.
Not sure what to target? Predict your 10K time from a recent race →
More 10K races
Build for Boulder — around your actual life
RunV engineers your block backwards from race day in May — and rebuilds it every time training doesn't go to script.
