SAN ANTONIO – The inaugural San Antonio Marathon weekend is almost here after a year of anticipation.
The 5K will take place on Friday, with the marathon and half-marathon happening on Sunday. The races, as well as the expo, will start and end in downtown San Antonio.
During a news conference on Monday, organizers said 18,000 participants are expected this weekend.
Watch the news conference below:
While all three events are sold out, people can still get in on the fun by volunteering at the races, attending the expo or cheering on runners along the routes.
Here’s a guide to the San Antonio Marathon weekend:
Health and fitness expo
All participants must pick up their race packets at the San Antonio Marathon Health and Fitness Expo, located at the Henry B. González Convention Center. Runners must pick up their own packets and provide a photo ID.
Packets will include a bib, T-shirt and gear bag.
There will also be vendors with running tech, apparel, nutrition and interactive experiences
The expo is free and open to the public.
Date: Dec. 5-6, 2025
Hours:
Friday, Dec. 5: Noon – 7 p.m.
Saturday, Dec. 6: 9 a.m.– 5 p.m.
There will be no packet pick-up on Sunday.
Routes
The marathon and half-marathon start at 7:15 a.m. Sunday at Main Plaza. Both races end at Hemisfair.
The course time limits for the marathon and half-marathon are seven and four hours, respectively.
The San Antonio Road Runners will provide pacing teams for both races.
Pace Times will be available for:
Half Marathon: 1:30, 1:45, 1:50, 2:00, 2:15, 2:30, and 3:00
Marathon: 3:30, 3:40, 3:50, 4:00, 4:15, 4:30, and 5:00
The San Antonio Marathon course is USATF certified and a qualifier for the Boston Marathon.
Route for the marathon on Sunday, Dec. 7, 2025. (San Antonio Sports)Route for the half-marathon on Sunday, Dec. 7, 2025. (San Antonio Sports)
The 5K will take place at 7 p.m. on Friday.
The race, which has an hour time limit, will start and end at Hemisfair.
Route for the 5K on Friday, Dec. 5, 2025. (San Antonio Sports)Street closures
The following neighborhoods will experience some type of road closures on Sunday:
Downtown
William
Pearl/St. Mary’s Strip
River Road neighborhood
Central (Trinity, Zoo, Tri-Point)
Monte Vista
Olmos Park
Alamo Heights
Mahncke Park
Westfort Alliance
>> Scenic, historic routes await runners in upcoming San Antonio Marathon
Road closures downtown start at 3 a.m. In the other areas, they will close and a rolling basis, starting at 6 a.m.
Parking will not be allowed on the race routes.
VIA bus routes affected
According to San Antonio Sports, VIA Metropolitan Transit routes will have detours in place on Sunday.
Visit viainfo.net for the latest route updates and detour details.
Call 210-362-2020 for assistance.
Rideshare drop-off locations
San Antonio Sports is encouraging runners and spectators to use rideshare apps on Sunday morning.
Those who use rideshare can direct their driver to one of the designated drop-off areas:
South End Drop-Off: Nueva Street, between Santa Rosa and Flores
North End Drop-Off: Travis Street, between Santa Rosa and Flores
Free parking at the Alamodome
During Monday’s news conference, City Manager Erik Walsh said free parking on Sunday will be available in lots B and C at the Alamodome, starting at 5 a.m.
Click here for more parking options:
Race day weather forecast
Click here for the latest running forecast in San Antonio from KSAT meteorologists.
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