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Mt. Umunhum Trail Marathon

San Jose, CA, USA

Partly cloudy throughout the day.

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Details
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Pre-Race
Race
Post-Race
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FAQ

When is the 2026 Mt. Umunhum Trail Marathon?

The 2026 Mt. Umunhum Trail Marathon will be held on Saturday February 7, 2026.

Is the Mt. Umunhum Trail Marathon a Boston Marathon Qualfier?

No, the Mt. Umunhum Trail Marathon is NOT a Boston Marathon qualifier.

Mt. Umunhum Trail Marathon Weather History

Mt. Umunhum Trail Marathon Weather Averages

Average Temp: 53°, Average Low: 47°, Average High: 62°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
48°
49°
51°
54°
56°
59°
60°
61°
Feel48°47°51°54°56°59°60°61°
Rain--------
Wind3mph
6mph
5mph
5mph
9mph
11mph
8mph
9mph
Dew43°43°44°44°44°45°46°45°
RunScoreRun Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8Run Score: 8

Mt. Umunhum Trail Marathon 2025

Feb 1, 2025
Cloudy skies throughout the day with morning rain.
Low: 53°, High: 61°, Light Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 55°
cloudy 55°
cloudy 56°
cloudy 57°
cloudy 58°
cloudy 58°
cloudy 59°
cloudy 61°
Feel55°55°56°57°58°58°59°61°
Rain--------
Wind8mph
11mph
6mph
11mph
14mph
14mph
9mph
8mph
Dew49°47°48°49°49°50°53°53°
RunScoreRun Score: 9Run Score: 8Run Score: 9Run Score: 8Run Score: 7Run Score: 7Run Score: 9Run Score: 9

Mt. Umunhum Trail Marathon 2024

Feb 3, 2024
Cloudy skies throughout the day with late afternoon rain.
Low: 47°, High: 58°, Moderate Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
cloudy 48°
partly-cloudy-day 48°
cloudy 50°
cloudy 53°
cloudy 55°
cloudy 57°
cloudy 57°
cloudy 58°
Feel46°47°48°53°55°57°57°58°
Rain--------
Wind5mph
4mph
6mph
8mph
8mph
8mph
11mph
11mph
Dew42°42°43°42°43°42°39°37°
RunScoreRun Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 9Run Score: 8Run Score: 8

Mt. Umunhum Trail Marathon 2023

Feb 4, 2023
Cloudy skies throughout the day with rain.
Low: 48°, High: 65°, Moderate Rain
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-night 49°
partly-cloudy-day 50°
partly-cloudy-day 52°
partly-cloudy-day 54°
partly-cloudy-day 59°
partly-cloudy-day 64°
partly-cloudy-day 65°
partly-cloudy-day 62°
Feel49°48°52°54°59°64°65°62°
Rain--------
Wind0mph
5mph
8mph
0mph
16mph
18mph
11mph
16mph
Dew47°46°47°48°47°48°54°53°
RunScoreRun Score: 7Run Score: 9Run Score: 9Run Score: 8Run Score: 7Run Score: 6Run Score: 8Run Score: 7

Mt. Umunhum Trail Marathon 2022

Feb 5, 2022
Partly cloudy throughout the day.
Low: 38°, High: 65°
Time7AM8AM9AM10AM11AM12PM1PM2PM
Temp
partly-cloudy-night 41°
partly-cloudy-day 42°
partly-cloudy-day 47°
partly-cloudy-day 51°
cloudy 54°
cloudy 57°
cloudy 59°
cloudy 62°
Feel41°40°47°51°54°57°59°62°
Rain--------
Wind0mph
4mph
0mph
0mph
0mph
3mph
0mph
0mph
Dew34°35°37°38°37°40°40°37°
RunScoreRun Score: 7Run Score: 8Run Score: 7Run Score: 8Run Score: 8Run Score: 9Run Score: 8Run Score: 8