Boulder, CO
Saturday, August 15, 2026
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See what splits you need to run for hundreds of different marathons - adjusted for the specific terrain of each marathon, your goal time and pacing strategies.
Race Dates
2026: Saturday, August 15, 2026Course Information
Profile: Rolling HillsRace Day Weather
Mean Temp.: 71°F (21°C)PR Score & Course Score
PR Score: Request ScoreRace Size
2025: 94 FinishersBQ Percentages
2025: 1.1%Miscellaneous Information
Pace Groups?: No
The Boulder Rez Marathon was the 384th largest marathon in the U.S. in 2025 based on the number of finishers. In 2024, it ranked as the 381st largest marathon in the U.S..
In 2025, 1.1% of Boulder Rez Marathon finishers achieved Boston Marathon qualifying times.
Based on its percentage of Boston Qualifiers (BQs), the Boulder Rez Marathon ranked 434th among marathons in the U.S. in 2025. In Colorado, it ranked 9th in 2025. This provides a useful benchmark for runners comparing Boston Marathon qualifying potential across different races.
There are currently no Course or PR Scores for the Boulder Rez Marathon. If you would like scores calculated, send a request here.
Learn more about PR Scores and Course Scores on the FAQ page.
No course elevation available at this time.
View available accomodations around the Boulder Rez Marathon Finish Line and Course. Book your Reservation now before the best places are sold out.
For a better mobile or desktop experience:
Use tools below to compare races and convert times across courses.
Do you want to see how the Boulder Rez Marathon stacks up against other marathons?
Compare the details of the Boulder Rez Marathon side-by-side with other marathons with our Comparison Tool.
If you ran the Boulder Rez Marathon in 4:49:00, what would your time in other marathons be?
See how your finish time would compare on other marathon courses with our Time Conversion Tool.
