San Antonio Marathon
Race Day Weather
Cool start, moderate finish
Runners will face a cool start at 49°F, rising to 65°F by the finish. Winds will be light from the NE at 9 mph, with moderate humidity at 62%. Runners should start conservatively and stay hydrated as temperatures increase, but gear adjustments are not necessary.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for San Antonio Marathon
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Race Info
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
