Friday, December 4, 2026 – Sunday, December 6San Antonio, TX
2026 San Antonio Marathon
3 events
- 2026 - 5K5KRoadStarts 8:00 PM
- 2026 - MarathonMarathonRoadStarts 7:15 AM
- 2026 - Half MarathonHalfRoadStarts 7:15 AM
Location
Approximate, from the race's ZIP code.
Typical race-day weatherIdeal weather · 94/100
- High / low
- 67° / 45°F
- 20° / 7°C
- Humidity
- 68%
- Dew point 43°F
- Chance of rain
- 16%
- Wind
- 9 mph
- Average
- Usually ideal weather for a marathon.
Averages for this area and time of year over the last 20 years, from NASA POWER data. Not a forecast.