San Antonio Marathon

San Antonio, TX, USADecember 6, 2026
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Race Day Weather

partly-cloudy-day
51°
65° high
Breezy
Dry

Cool start, steady conditions

Runners will face temperatures starting at 51°F and peaking at 65°F. With a max wind of 8 mph from SE, conditions will be favorable. Humidity will hover around 64%, suggesting a comfortable race, but runners should stay hydrated. A conservative pace at the start is advisable to manage rising temperatures.

Race day forecast available in 254 days
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As the 7th largest city in the US, San Antonio is ready for a world-class marathon. San Antonio Sports, in partnership with the City of San Antonio, and marathon industry experts from The Trust Group and Boston Marathon winner, Meb Keflezighi, is thrilled to introduce the San Antonio Marathon. Now, with an incredible opportunity to elevate San Antonio’s premier running experience we aim to reflect the vibrant cultural spirit and uniqueness of our community. Join us in the celebration of a new running tradition where every step tells a story. Source

Area Map

Course Map

FAQ

When is the 2026 San Antonio Marathon?

The 2026 San Antonio Marathon will be held on Sunday December 6, 2026.

Is the San Antonio Marathon a Boston Marathon Qualifier?

Yes, the San Antonio Marathon is an official Boston Marathon qualifier.

What is the time limit for the San Antonio Marathon?

The time limit for the San Antonio Marathon is 7 hours.

Historical Weather

Based on 1 years of data
Avg Temp
80°F
L:61° H:80°
RunScore
7
Conditions
Rain Freq
0%
0 of 1 yrs
Wind11mph
Dew43°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScore
2025
cloudy
61°/80°-
8