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Race Overview
The Colfax Marathon (previously known as the Colorado Colfax Marathon) is an annual marathon foot-race held in Colorado, United States, since 2006. Significant portions of the course follow Colfax Avenue.
WikipediaFAQ
When is the 2026 Colfax Marathon?
The 2026 Colfax Marathon will be held on Sunday May 17, 2026.
Is the Colfax Marathon a Boston Marathon Qualfier?
Yes, the Colfax Marathon is an official Boston Marathon qualifier.
Colfax Marathon Weather History
Colfax Marathon Weather Averages
Average Temp: 55°, Average Low: 43°, Average High: 68°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 46° | 50° | 54° | 58° | 61° | 64° | 65° | 67° |
| Feel | 43° | 48° | 53° | 58° | 61° | 64° | 65° | 66° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 7mph | 7mph | 7mph | 7mph | 8mph | 8mph | 8mph |
| Dew | 36° | 36° | 36° | 35° | 34° | 33° | 33° | 33° |
| RunScore |  | | | | | | | |
Colfax Marathon 2025
May 18, 2025
Partly cloudy throughout the day with rain.
Low: 45°, High: 64°, Moderate Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 46° | 49° | 53° | 57° | 60° | 64° |  61° | 63° |
| Feel | 43° | 47° | 53° | 57° | 60° | 64° | 61° | 63° |
| Rain | - | - | - | - | - | - | light | light |
| Wind | 5mph | 5mph | 7mph | 6mph | 5mph | 5mph | 14mph | 10mph |
| Dew | 40° | 40° | 43° | 44° | 44° | 43° | 45° | 43° |
| RunScore | |  | | | | | |  |
Colfax Marathon 2024
May 19, 2024
Partly cloudy throughout the day.
Low: 54°, High: 79°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 55° | 62° | 68° | 73° | 75° | 76° | 77° | 78° |
| Feel | 55° | 62° | 68° | 73° | 75° | 76° | 77° | 78° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 12mph | 15mph | 15mph | 14mph | 5mph | 8mph | 2mph | 1mph |
| Dew | 42° | 43° | 42° | 40° | 36° | 34° | 33° | 32° |
| RunScore | |  | | | | | | |
Colfax Marathon 2023
May 21, 2023
Partly cloudy throughout the day.
Low: 48°, High: 72°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 51° | 56° | 61° | 64° | 66° | 68° | 70° | 71° |
| Feel | 51° | 56° | 61° | 64° | 66° | 68° | 70° | 71° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 7mph | 8mph | 8mph | 11mph | 10mph | 12mph | 13mph |
| Dew | 42° | 43° | 43° | 41° | 39° | 40° | 40° | 40° |
| RunScore | | | | | | | | |
Colfax Marathon 2022
May 15, 2022
Partly cloudy throughout the day.
Low: 49°, High: 76°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 55° | 62° | 63° | 63° | 65° | 67° | 70° | 72° |
| Feel | 55° | 62° | 63° | 63° | 65° | 67° | 70° | 72° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 6mph | 5mph | 16mph | 17mph | 11mph | 10mph | 6mph | 8mph |
| Dew | 33° | 32° | 36° | 36° | 35° | 35° | 35° | 34° |
| RunScore | | | | | | | | |
Colfax Marathon 2021
Oct 16, 2021
Clear conditions throughout the day.
Low: 35°, High: 69°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  35° |  40° | 50° | 57° | 61° | 64° | 66° | 69° |
| Feel | 28° | 34° | 47° | 57° | 61° | 64° | 66° | 69° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 8mph | 10mph | 8mph | 7mph | 5mph | 8mph | 8mph | 7mph |
| Dew | 16° | 15° | 17° | 17° | 16° | 17° | 17° | 18° |
| RunScore | | | | | | | | |
Colfax Marathon 2019
May 19, 2019
Partly cloudy throughout the day with rain.
Low: 37°, High: 58°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp |  37° | 38° | 41° | 45° | 48° | 52° | 54° | 58° |
| Feel | 31° | 33° | 36° | 41° | 45° | 52° | 54° | 58° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 8mph | 6mph | 7mph | 8mph | 6mph | 11mph | 11mph | 15mph |
| Dew | 34° | 34° | 35° | 36° | 37° | 38° | 39° | 40° |
| RunScore | | | | | | | | |
Colfax Marathon 2018
May 20, 2018
Cloudy skies throughout the day.
Low: 41°, High: 56°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 42° | 42° | 44° | 46° | 49° | 52° | 53° | 55° |
| Feel | 37° | 38° | 44° | 43° | 46° | 52° | 53° | 55° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 6mph | 3mph | 5mph | 5mph | 6mph | 9mph | 6mph |
| Dew | 40° | 40° | 41° | 42° | 41° | 42° | 43° | 43° |
| RunScore | | | | | | | | |
Colfax Marathon 2017
May 21, 2017
Becoming cloudy in the afternoon with late afternoon rain.
Low: 38°, High: 64°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 45° | 50° | 54° | 57° | 60° | 61° | 63° | 63° |
| Feel | 41° | 50° | 54° | 57° | 60° | 61° | 63° | 63° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 8mph | 6mph | 3mph | 2mph | 3mph | 6mph | 6mph | 4mph |
| Dew | 34° | 34° | 32° | 31° | 31° | 31° | 32° | 31° |
| RunScore | | | | | | | | |
Colfax Marathon 2016
May 15, 2016
Partly cloudy throughout the day.
Low: 40°, High: 60°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 41° | 42° | 48° | 50° | 53° | 55° | 58° | 56° |
| Feel | 41° | 39° | 45° | 50° | 53° | 55° | 58° | 56° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 1mph | 6mph | 6mph | 3mph | 4mph | 6mph | 8mph | 18mph |
| Dew | 34° | 35° | 36° | 37° | 38° | 39° | 41° | 39° |
| RunScore | | | | | | | | |
Colfax Marathon 2015
May 17, 2015
Partly cloudy throughout the day.
Low: 41°, High: 63°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 46° | 51° | 56° | 59° | 59° | 61° | 62° | 63° |
| Feel | 41° | 51° | 56° | 59° | 59° | 61° | 62° | 63° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 12mph | 8mph | 4mph | 9mph | 8mph | 10mph | 7mph | 7mph |
| Dew | 31° | 33° | 32° | 32° | 34° | 34° | 34° | 35° |
| RunScore | | | | | | | | |
Colfax Marathon 2014
May 18, 2014
Partly cloudy throughout the day.
Low: 50°, High: 81°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 50° | 53° | 60° | 70° | 75° | 79° | 80° | 80° |
| Feel | 48° | 53° | 60° | 70° | 75° | 79° | 79° | 79° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 6mph | 6mph | 12mph | 16mph | 14mph | 12mph | 10mph |
| Dew | 43° | 44° | 43° | 40° | 35° | 32° | 28° | 29° |
| RunScore | | | | | | | | |
Colfax Marathon 2013
May 19, 2013
Partly cloudy throughout the day with late afternoon rain.
Low: 46°, High: 68°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 51° | 54° | 57° | 61° | 62° | 63° | 66° | 65° |
| Feel | 51° | 54° | 57° | 61° | 62° | 63° | 66° | 65° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 4mph | 7mph | 6mph | 4mph | 3mph | 4mph | 7mph | 12mph |
| Dew | 39° | 35° | 33° | 30° | 28° | 28° | 29° | 26° |
| RunScore | | | | | | | | |
Colfax Marathon 2012
May 20, 2012
Partly cloudy throughout the day.
Low: 42°, High: 73°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 47° | 50° | 55° | 60° | 64° | 68° | 71° | 72° |
| Feel | 43° | 50° | 55° | 60° | 64° | 68° | 71° | 72° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 9mph | 7mph | 5mph | 4mph | 7mph | 4mph | 1mph |
| Dew | 43° | 44° | 43° | 43° | 40° | 33° | 32° | 32° |
| RunScore | | | | | | | | |
Colfax Marathon 2011
May 15, 2011
Cloudy skies throughout the day with rain or snow clearing later.
Low: 34°, High: 46°, Light Rain
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 34° | 35° | 36° | 37° | 40° | 41° | 43° | 44° |
| Feel | 27° | 28° | 29° | 31° | 33° | 37° | 39° | 42° |
| Rain | light | - | - | - | - | - | - | - |
| Wind | 10mph | 8mph | 10mph | 10mph | 9mph | 7mph | 7mph | 4mph |
| Dew | 32° | 33° | 33° | 33° | 33° | 33° | 33° | 34° |
| RunScore | | | | | | | | |
Colfax Marathon 2010
May 16, 2010
Partly cloudy throughout the day.
Low: 36°, High: 64°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 41° | 46° | 49° | 53° | 56° | 58° | 61° | 62° |
| Feel | 37° | 44° | 47° | 53° | 56° | 58° | 61° | 62° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 5mph | 5mph | 3mph | 7mph | 11mph | 10mph | 13mph |
| Dew | 36° | 39° | 40° | 39° | 38° | 38° | 36° | 37° |
| RunScore | | | | | | | | |
Colfax Marathon 2009
May 17, 2009
Partly cloudy throughout the day.
Low: 45°, High: 77°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 50° | 58° | 64° | 68° | 71° | 73° | 74° | 76° |
| Feel | 48° | 58° | 64° | 68° | 71° | 73° | 74° | 76° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 7mph | 6mph | 1mph | 6mph | 3mph | 3mph | 5mph |
| Dew | 38° | 39° | 35° | 31° | 25° | 26° | 27° | 27° |
| RunScore | | | | | | | | |
Colfax Marathon 2008
May 18, 2008
Partly cloudy throughout the day.
Low: 48°, High: 81°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 53° | 60° | 67° | 72° | 75° | 77° | 79° | 81° |
| Feel | 53° | 60° | 67° | 72° | 75° | 77° | 79° | 79° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 7mph | 10mph | 11mph | 10mph | 7mph | 7mph | 9mph | 14mph |
| Dew | 37° | 37° | 35° | 34° | 31° | 31° | 29° | 24° |
| RunScore | | | | | | | | |
Colfax Marathon 2007
May 20, 2007
Partly cloudy throughout the day.
Low: 51°, High: 75°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 55° | 59° | 65° | 68° | 72° | 75° | 75° | 75° |
| Feel | 55° | 59° | 65° | 68° | 72° | 75° | 75° | 75° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 6mph | 4mph | 2mph | 3mph | 7mph | 6mph | 5mph |
| Dew | 44° | 44° | 44° | 41° | 42° | 42° | 40° | 42° |
| RunScore | | | | | | | | |
Colfax Marathon 2006
May 11, 2006
Partly cloudy throughout the day.
Low: 30°, High: 66°
| Time | 7AM | 8AM | 9AM | 10AM | 11AM | 12PM | 1PM | 2PM |
|---|---|---|---|---|---|---|---|---|
| Temp | 36° | 43° | 47° | 53° | 56° | 58° | 62° | 63° |
| Feel | 31° | 38° | 43° | 53° | 56° | 58° | 62° | 63° |
| Rain | - | - | - | - | - | - | - | - |
| Wind | 5mph | 8mph | 8mph | 9mph | 9mph | 5mph | 5mph | 3mph |
| Dew | 27° | 28° | 27° | 25° | 21° | 19° | 20° | 19° |
| RunScore | | | | | | | | |