RUNboulder Monthly Miles
About this race
Finish the year one mile at a time with RUNboulder. Our free December mileage pilot runs December 1–31, 2026. Run anywhere and build toward 25, 50, 100, 150, or 200 miles. Choose a goal that fits your training; every pace is welcome.
How it works
Register, then submit the date and distance of each run through RunSignup. Eligible activities add together toward your monthly total.
Pilot rules
Running and run/walk workouts count: road, trail, track, and treadmill. Cycling and other activities do not count. Log each activity once, using its distance rather than your cumulative total. Only activities completed December 1–31, 2026 count. Submit final activities by January 2, 2027 at 11:59 PM Mountain Time. All deadlines use Mountain Time.
Mileage is self-reported. Keep activity records so errors can be checked. Automatic watch or Strava syncing is not included. Entry is free; no physical merchandise or prizes are included.
Run your own routes, follow local access rules, and adjust your goal as needed. Community information: RUNboulder.
Pick your distance
Running
December Mileage Pilot
Typical race-day weather
Based on 6 years of Open-Meteo archive data for this event's race dates in Boulder, plus the 3 days either side.
The sun rises at 7:03 AM and sets at 4:36 PM local time (MST) in Boulder on December 1, 2026 — 9h 32m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
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Other races near Boulder
Different organizers, within 40 miles, in the next three months
Hometown Turkey Trot Virtual 5K - Boulder
Alpine Bank Boulder Thanksgiving Day 5K
Hands & Voices New Year Virtual 5K: Trails to the Summit
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🏃 Plan Your Next Race in Boulder
Find upcoming events by distance:
- Boulder 5K Races 15 races
- 10K Run Events in Boulder 2 races
- Boulder Half Marathons 2 races
- Boulder Running Calendar 2026 28 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 32 Boulder events
Spotted something wrong? Tell us and we'll fix it.