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Colfax Marathon

Denver, CO

Race Dates

2017: Sunday, May 21, 2017
2016: Sunday, May 15, 2016

Course Information

Profile: Rolling Hills
Type: Mostly Loop
Surface: Road/Pavement
Certified?: Yes

Race Day Weather

Mean Temp.: 59°F (15°C)
Average High: 68°F (20°C)
Average Low: 40° F (4°C)

Historical Weather

PR Score & Course Score

PR Score: 92.90
Course Score: 92.90

Race Size

2016: 1,262 Finishers
2015: 1,415 Finishers
2014: 1,332 Finishers

BQ Percentages

2016: 5.9%
2015: 6.3%
2014: 5.1%

Miscellaneous Information

Pace Groups?: No

Marathon Pace Bands

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Course Description

The unique Colfax Marathon course runs through a fire station, through Mile High Stadium, and along the longest road, ColFax Avenue.

Marathon Rankings

The Colfax Marathon was the 67th largest marathon in the U.S. last year and was the 82nd largest in 2014.

This year 5.9% of finishers qualified for the Boston Marathon and 6.3% of runners qualified for Boston in 2015.

This gives the Colfax Marathon the 343rd highest percentage of Boston Marathon qualifiers in the U.S. last year and the 236th highest percentage so far in 2016.

Its Course Score of 92.90 ranks it as the 405th fastest marathon course in the U.S. and the 3rd fastest course in Colorado.

The typical race time temperature and humidity levels are within the ideal range for optimal marathon performance. This, coupled with the Course Score, gives the Colfax Marathon a PR Score of 92.90. This PR Score ranks it as the 402nd fastest marathon in the U.S. and the 3rd fastest in Colorado.

Learn more about PR Scores and Course Scores on the FAQ page.

Elevation Chart

Max Elevation: 5530 feet (1685m)
Min Elevation: 5170 feet (1576m)


Ratings & Reviews: None

Finish Time Equivalent

If you ran the Colfax Marathon in 3:20:00, what would your time in the Boston Marathon be?

See how your race times would compare on other marathon courses using the Marathon Time Converter Tool.