How hilly is the BOLDERBoulder 10K?
The BOLDERBoulder 10K is described as gently rolling. The course listing puts the climb at 122 m.
BOLDERBoulder 10K
This race edition
- Race date
- Date not confirmed for this distance
- Race timezone
- Timezone not confirmed
- Edition status
- Status not confirmed
Entry options
2027 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Decision summary
BOLDERBoulder 10K at a glance
- Typical conditions
- 84/100
- Evidence depth
- 41 verified facts
Historical race-date favourability, not a forecast
Source facts available
Route details
Known course facts at a glance
BOLDERBoulder 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, Countryside, Mountain, Parkland
Quick answers
What runners ask first
Where does the BOLDERBoulder 10K route go?
The BOLDERBoulder 10K route starts at line just north of Walnut Street on 30th Street in Boulder; start/staging area around Folsom and Taft / 30th & Walnut and finishes inside the University of Colorado's Folsom Field stadium, with tens of thousands of spectators cheering finishers across the line. Underfoot, expect road. It passes 30th Street, Walnut Street, Boulder residential neighborhoods, Folsom Street and University of Colorado Boulder. culminates with the largest Memorial Day Tribute in the country inside the University of Colorado's Folsom Field, featuring skydivers and a military flyover.
What should runners know on race day for the BOLDERBoulder 10K?
Run on closed Boulder city streets on Memorial Day morning, finishing inside Folsom Field at the University of Colorado. The course is packed with energy: dancers, dozens of live music groups, belly dancers, improvised slip 'n slides and entertainment around every corner, plus unofficial spectator food and beverage stations.
Race character
Scenery
- City
- Coastal
- Countryside
- Mountain
- Parkland
Terrain
- Road
- Elevation character
- Gently Rolling
- Technicality
- Non Technical
- Source-stated ascent
- 122 m
Entry, logistics and records
Records and field
- Men's course record
- 27:52 (Josephat Machuka)
- Women's course record
- 31:51 (Grace Nawowuna)
- Field size
- Around 50,000 participants (40,000+ registered runners/walkers/wheelchair racers), plus 100,000+ spectators and 1,500+ volunteers; the 2025 race had 52,185 finishers.
Entry requirements
- Entry status
- Open entry: The held registration model is open entry and this edition is not marked sold out.
- Qualification status
- Open Entry, mass Participation 10K. The event invented the wave start in 1983 to group runners by similar speed; participants submitting a qualifying time (75 minutes or faster within a year) are placed in Qualified Waves, but the race is open to all and is not a championship qualifier.
Race day logistics
- Closed roads
- Run on closed Boulder city streets on Memorial Day morning, finishing inside Folsom Field at the University of Colorado.
- Expo / packet pickup
- RaceDay Expo with sponsor merchandise and food samples; registration packages include an official BB10K shirt, race bib and timing chip, snack bag and drink (free beer sample for ages 21+), stadium entry for the pro race finish, stadium entry for the Memorial Day Tribute, and RaceDay Expo entry.
- Finisher tee
- Registration includes an official BB10K shirt (choice of design) as part of the entry package.
- On-course music
- The course is packed with energy: dancers, dozens of live music groups, belly dancers, improvised slip 'n slides and entertainment around every corner, plus unofficial spectator food and beverage stations.
Access and course status
- Start
- Start line just north of Walnut Street on 30th Street in Boulder; start/staging area around Folsom and Taft / 30th & Walnut.
- Finish
- Finishes inside the University of Colorado's Folsom Field stadium, with tens of thousands of spectators cheering finishers across the line.
Course facts
- Course type
- Point To Point
- Surface
- Road
- Landmarks
- 30th Street, Walnut Street, Boulder residential neighborhoods, Folsom Street, University of Colorado Boulder, Folsom Field
- Notable features
- Part run, walk, parade, costume party and professional race
- culminates with the largest Memorial Day Tribute in the country inside the University of Colorado's Folsom Field, featuring skydivers and a military flyover. Includes a kids' program (BOLD Squad) and one of the largest non-marathon prize purses in road racing
- Uses a wave start system (invented at this race in 1983)
- runners are assigned to waves by pace, with the elite/professional race contested separately. All participants must pass the intersection of Folsom and Arapahoe by a set cutoff time on race morning
- Run at over a mile (about 1,600 m) above sea level
- the course winds through Boulder's residential neighborhoods and broad avenues, alternating rolling residential areas and gentle false flats before a spectacular finish entering Folsom Field. Carries a World Athletics Label
What are typical race-day conditions?
- 14°CTypical temperature
- 15 kphTypical wind
- 3 mmTypical rainfall
- 84Favourability /100