Where does the Boulderthon 10K route go?
The Boulderthon 10K route starts at Pearl Street Mall, downtown Boulder. Underfoot, expect a road course.
Boulderthon 10K
This race edition
- Race date
- Date not confirmed for this distance
- Race timezone
- Timezone not confirmed
- Edition status
- Status not confirmed
Entry options
2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Decision summary
Boulderthon 10K at a glance
- Typical conditions
- 81/100
- Evidence depth
- 20 verified facts
Historical race-date favourability, not a forecast
Source facts available
Route details
Known course facts at a glance
Boulderthon 10K has known course details for its 10k race. The summary below keeps the focus on what is confirmed for the course.
- Official distance
- 10 km
- Terrain
- Road
- Scenery
- City, Coastal, Mountain, Lakeside, Countryside
Quick answers
What runners ask first
Race character
Scenery
- City
- Coastal
- Mountain
- Lakeside
- Countryside
Atmosphere
- Big City
- Festival
- Destination
Terrain
- Road
Entry, logistics and records
Records and field
- Field size
- 15000+ participants across all distances
Entry requirements
- Entry status
- Open entry: The held registration model is open entry and this edition is not marked sold out.
Race day logistics
- Expo / packet pickup
- Lively Race Expo on Pearl Street Mall (between 14th & 15th) with 70+ local and national partners; official bib pickup Fri 9/25 2pm-6pm and Sat 9/26 10am-6pm
- Race village
- No
- Medal
- All finishers receive a limited-edition finisher medal and finisher shirt
- Finisher tee
- Finisher technical shirt from lululemon
Access and course status
- Start
- Pearl Street Mall, downtown Boulder
Course facts
- Notable features
- First-come first-served registration
- race typically sells out and has grown to be one of the fastest-growing fall races in the US
- finisher technical shirts provided by lululemon
- 10K presented by Cheribundi
What are typical race-day conditions?
- 16°CTypical temperature
- 14 kphTypical wind
- 1 mmTypical rainfall
- 81Favourability /100