South Texas International Marathon
South Texas International Marathon is listed for December 6, 2026 in Mercedes, Texas, United States. Listed distances: Full Marathon, Half Marathon, Relay. Confirm the date, registration and travel details with the official organizer before you book.
About this race
Source-verified marathon-family event. Official or registration source: https://stimarathon.com/. MarathonGuide discovery page: https://www.marathonguide.com/races/run/south-texas-international-marathon-4/details/. Verified evidence: discovery evidence: Marathon Marathon Marathon Adults Point to point Mostly Flat Run only December 06, 2026 Sunday | 6-Person Relay Marathon Marathon Adults Point to point Mostly Flat Run only December 06, 2026 Sunday | Half Marathon Half Marathon Half...
Key facts
- Date
- December 6, 2026
- Location
- Mercedes, Texas, United States
- Events
- Full Marathon, Half Marathon, Relay
- Surface
- Road
- Official source
- Registration page & official site
- Listing status
- Verified · updated May 21, 2026
Before you register
- 1Confirm the race-day schedule
Verify the December 6, 2026 start times, packet pickup and corral instructions on the official source before booking travel.
- 2Pin the exact start area
Use Texas as the planning region, then confirm the precise start, finish, parking and transport with the organizer.
- 3Pick your distance
Listed options are Full Marathon, Half Marathon, Relay. Check the source for current per-distance availability and limits.
- 4Review entry terms
Read entry rules, refund terms, participant limits and transfer rules before you pay.