Bolder Boulder
Road Running covering 10 km in Boulder (Colorado, United States)
Bolder Boulder is an endurance sporting event in Boulder, Colorado, US focused on Road Running. It is part of World Athletics Label. Key features include City Run, Festive.
The competition program features Road Running 10 km (10 km, +45 m D+). The next edition is officially confirmed for May 31, 2027. Official race regulations, course details, and registration information are provided on the organizer's website (bolderboulder.com).

Races & distances (1)
| Competition | Discipline | Distance | Elevation gain | Altitude range | Course type | Course & profile |
|---|---|---|---|---|---|---|
| Road Running 10 km | Road Running | 10 km | +45 m | 61 m - 80 m | Loop course | Route & profile |
Course route & map
Elevation profile & course telemetry
Altitude from 61 m to 80 m above sea level (+45 m D+, -45 m D-)
Frequently asked questions (FAQ)
When and where does Bolder Boulder take place?
Bolder Boulder takes place in Boulder, Colorado, US (start area at coordinates 40.015° N, 105.2705° W). The next edition is officially confirmed for May 31, 2027.
What races and distances are offered at Bolder Boulder?
The competition program features Road Running 10 km (10 km, +45 m D+). The competitions belong to Road Running.
What is the course layout and elevation profile for Bolder Boulder?
The main competition (Road Running 10 km over 10 km) is designed as a loop course featuring +45 m of elevation gain and -45 m of elevation loss, ranging between 61 m and 80 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.
Where can I find registration and official race rules for Bolder Boulder?
Official race regulations, course details, and registration information are provided on the organizer's website (bolderboulder.com).