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Mt. Sneffels Marathon

Ouray, CO, USA

Partly cloudy throughout the day.

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Details
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Pre-Race
Race
Post-Race
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Race Overview

The Mt. Sneffels Marathon offers runners a challenging and scenic journey through Colorado's San Juan Mountains. The course features a mix of gravel and packed dirt roads, with an elevation gain of approximately 1,500 feet, providing a true test of endurance. Participants are treated to breathtaking views of Mount Sneffels and the surrounding peaks, making it a memorable experience for all.
Wikipedia

FAQ

When is the 2026 Mt. Sneffels Marathon?

The 2026 Mt. Sneffels Marathon will be held on Saturday August 15, 2026.

Mt. Sneffels Marathon Weather History

Mt. Sneffels Marathon Weather Averages

Average Temp: 62°, Average Low: 51°, Average High: 74°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
52°
55°
60°
64°
67°
69°
70°
71°
Feel52°55°60°64°67°69°70°71°
Rain--------
Wind4mph
3mph
2mph
2mph
5mph
6mph
6mph
7mph
Dew39°40°41°40°37°38°37°37°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2025

Aug 16, 2025
Partly cloudy throughout the day.
Low: 53°, High: 71°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 53°
partly-cloudy-day 53°
partly-cloudy-day 57°
clear-day 60°
partly-cloudy-day 64°
cloudy 66°
clear-day 67°
cloudy 68°
Feel53°53°57°60°64°66°67°68°
Rain--------
Wind0mph
0mph
1mph
0mph
8mph
3mph
9mph
9mph
Dew47°47°47°43°42°40°38°38°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2024

Aug 17, 2024
Partly cloudy throughout the day with rain.
Low: 54°, High: 74°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 54°
clear-day 56°
clear-day 63°
clear-day 70°
clear-day 74°
partly-cloudy-day 74°
partly-cloudy-day 74°
partly-cloudy-day 73°
Feel54°56°63°70°74°74°74°73°
Rain--------
Wind5mph
8mph
1mph
1mph
5mph
11mph
8mph
7mph
Dew33°34°36°36°33°35°37°41°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2023

Aug 19, 2023
Partly cloudy throughout the day.
Low: 54°, High: 80°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 54°
clear-day 57°
clear-day 63°
partly-cloudy-day 71°
partly-cloudy-day 72°
clear-day 74°
clear-day 75°
partly-cloudy-day 78°
Feel54°57°63°71°72°74°75°78°
Rain--------
Wind6mph
6mph
5mph
3mph
9mph
7mph
7mph
8mph
Dew42°42°42°40°34°33°29°26°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2022

Aug 20, 2022
Partly cloudy throughout the day with late afternoon rain.
Low: 51°, High: 65°, Moderate Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 53°
cloudy 54°
cloudy 56°
cloudy 57°
cloudy 55°
partly-cloudy-day 58°
partly-cloudy-day 61°
partly-cloudy-day 65°
Feel53°54°56°57°55°58°61°65°
Rain--------
Wind0mph
0mph
0mph
0mph
7mph
4mph
5mph
7mph
Dew44°44°47°47°49°49°47°47°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 9

Mt. Sneffels Marathon 2021

Aug 21, 2021
Partly cloudy throughout the day.
Low: 44°, High: 69°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 45°
partly-cloudy-day 47°
clear-day 55°
partly-cloudy-day 62°
partly-cloudy-day 63°
partly-cloudy-day 60°
partly-cloudy-day 62°
partly-cloudy-day 66°
Feel42°47°55°62°63°60°62°66°
Rain--------
Wind7mph
0mph
1mph
5mph
7mph
1mph
0mph
5mph
Dew37°38°42°39°38°45°45°42°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 8Run Score: 9

Mt. Sneffels Marathon 2019

Aug 17, 2019
Clear conditions throughout the day.
Low: 55°, High: 76°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 56°
clear-day 61°
clear-day 65°
clear-day 69°
partly-cloudy-day 72°
partly-cloudy-day 74°
partly-cloudy-day 75°
partly-cloudy-day 76°
Feel56°61°65°69°72°74°75°76°
Rain--------
Wind4mph
3mph
2mph
4mph
12mph
13mph
13mph
12mph
Dew26°28°30°26°22°23°22°23°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2018

Aug 11, 2018
Clear conditions throughout the day.
Low: 52°, High: 80°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 52°
clear-day 56°
clear-day 62°
clear-day 67°
clear-day 72°
partly-cloudy-day 74°
partly-cloudy-day 76°
partly-cloudy-day 78°
Feel52°56°62°67°72°74°76°78°
Rain--------
Wind3mph
1mph
2mph
3mph
8mph
10mph
5mph
5mph
Dew33°33°33°33°33°33°29°23°
RunScoreRun Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2017

Aug 12, 2017
Becoming cloudy in the afternoon with late afternoon rain.
Low: 47°, High: 78°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 47°
clear-day 51°
clear-day 56°
clear-day 61°
clear-day 65°
partly-cloudy-day 67°
partly-cloudy-day 70°
clear-day 78°
Feel46°51°56°61°65°67°70°78°
Rain--------
Wind4mph
1mph
0mph
3mph
4mph
4mph
10mph
8mph
Dew43°43°43°45°44°44°41°47°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2016

Aug 13, 2016
Partly cloudy throughout the day.
Low: 49°, High: 74°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 50°
partly-cloudy-day 54°
clear-day 58°
clear-day 64°
clear-day 68°
partly-cloudy-day 70°
clear-day 72°
clear-day 73°
Feel47°54°58°64°68°70°72°73°
Rain--------
Wind8mph
0mph
4mph
1mph
6mph
6mph
10mph
8mph
Dew30°29°32°32°23°22°24°22°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 9Run Score: 9Run Score: 8Run Score: 9

Mt. Sneffels Marathon 2015

Aug 8, 2015
Partly cloudy throughout the day with early morning rain.
Low: 50°, High: 69°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 51°
partly-cloudy-day 52°
partly-cloudy-day 54°
clear-day 60°
partly-cloudy-day 63°
partly-cloudy-day 63°
partly-cloudy-day 64°
partly-cloudy-day 66°
Feel51°52°54°60°63°63°64°66°
Rain--------
Wind1mph
1mph
0mph
0mph
0mph
8mph
7mph
4mph
Dew48°49°50°50°46°48°50°48°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9Run Score: 9

Mt. Sneffels Marathon 2014

Aug 9, 2014
Clear conditions throughout the day.
Low: 50°, High: 81°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 50°
clear-day 56°
clear-day 61°
clear-day 66°
clear-day 71°
clear-day 77°
partly-cloudy-day 73°
partly-cloudy-day 74°
Feel50°56°61°66°71°77°73°74°
Rain--------
Wind5mph
4mph
4mph
1mph
5mph
5mph
2mph
6mph
Dew32°34°34°35°30°39°32°30°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2013

Aug 10, 2013
Partly cloudy throughout the day with rain.
Low: 47°, High: 68°, Heavy Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 51°
clear-day 53°
clear-day 60°
partly-cloudy-day 64°
partly-cloudy-day 66°
partly-cloudy-day 68°
rain 56°
rain 56°
Feel51°53°60°64°66°68°56°56°
Rain------lightlight
Wind9mph
4mph
0mph
6mph
7mph
4mph
12mph
7mph
Dew38°40°39°40°37°34°45°48°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 9Run Score: 9Run Score: 9Run Score: 5Run Score: 6

Mt. Sneffels Marathon 2012

Aug 11, 2012
Partly cloudy throughout the day.
Low: 55°, High: 76°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 57°
partly-cloudy-day 59°
partly-cloudy-day 64°
partly-cloudy-day 68°
clear-day 74°
partly-cloudy-day 73°
clear-day 76°
partly-cloudy-day 75°
Feel57°59°64°68°74°73°76°75°
Rain--------
Wind1mph
5mph
1mph
0mph
6mph
9mph
6mph
11mph
Dew45°44°46°46°40°39°39°36°
RunScoreRun Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 7

Mt. Sneffels Marathon 2011

Aug 13, 2011
Partly cloudy throughout the day.
Low: 54°, High: 81°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 54°
clear-day 59°
clear-day 64°
clear-day 70°
clear-day 74°
partly-cloudy-day 77°
partly-cloudy-day 78°
partly-cloudy-day 80°
Feel54°59°64°70°74°77°78°78°
Rain--------
Wind5mph
4mph
0mph
0mph
1mph
5mph
5mph
6mph
Dew30°30°34°32°29°24°24°25°
RunScoreRun Score: 9Run Score: 9Run Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2010

Aug 28, 2010
Partly cloudy throughout the day.
Low: 55°, High: 65°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 55°
partly-cloudy-day 57°
partly-cloudy-day 64°
cloudy 63°
cloudy 63°
cloudy 63°
cloudy 63°
cloudy 63°
Feel55°57°64°63°63°63°63°63°
Rain--------
Wind5mph
1mph
5mph
0mph
1mph
1mph
1mph
9mph
Dew40°41°43°43°39°40°42°43°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2009

Aug 14, 2009
Partly cloudy throughout the day with a chance of rain throughout the day.
Low: 53°, High: 70°, Moderate Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-day 55°
rain 56°
cloudy 57°
cloudy 58°
cloudy 60°
partly-cloudy-day 62°
clear-day 65°
partly-cloudy-day 65°
Feel55°56°57°58°60°62°65°65°
Rain-light------
Wind0mph
0mph
5mph
0mph
0mph
0mph
3mph
5mph
Dew57°58°57°57°57°57°53°55°
RunScoreRun Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 8Run Score: 8Run Score: 9Run Score: 9

Mt. Sneffels Marathon 2007

Aug 25, 2007
Clear conditions throughout the day.
Low: 53°, High: 81°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 53°
clear-day 58°
clear-day 63°
clear-day 69°
clear-day 74°
clear-day 77°
partly-cloudy-day 77°
partly-cloudy-day 77°
Feel53°58°63°69°74°77°77°77°
Rain--------
Wind6mph
5mph
4mph
0mph
4mph
6mph
4mph
1mph
Dew33°35°35°35°29°31°30°30°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 7Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Sneffels Marathon 2005

Aug 20, 2005
Clear conditions throughout the day.
Low: 49°, High: 72°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
clear-day 52°
clear-day 54°
clear-day 60°
clear-day 61°
partly-cloudy-day 64°
clear-day 66°
clear-day 71°
clear-day 71°
Feel52°54°60°61°64°66°71°71°
Rain--------
Wind6mph
3mph
4mph
5mph
5mph
4mph
4mph
6mph
Dew43°45°46°48°46°47°49°46°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8