STIMarathon
We are extremely excited to celebrate The 3rd Annual South Texas Marathon on December 7, 2025. We are hoping that you can join us for this fantastic marathon!
- 26.2 miles of USATF-Certified
- Point to Point Marathon
- Boston Qualifier event
- Flat & Fast Course
- Run through 4 Historic Cities & 2 Counties
- Professional Chip Timing
- Custom Race Bib
- Free Action Photos
- Access to the three-day STIM Health & Fitness Expo
- Medical Support Throughout the Course
- Tech Race Shirt
- 6.5 Hour Finish Time Limit (14:50 Pace per Mile)
- Transportation from Finish Line to Start Line
- Authentic Regional Cuisine at Finish Line (until food lasts)
- 26.2 miles of USATF-Certified
- Point to Point Marathon
- Boston Qualifier event
- Flat & Fast Course
- Run through 4 Historic Cities & 2 Counties
- Professional Chip Timing
- Custom Race Bib
- Free Action Photos
- Access to the three-day STIM Health & Fitness Expo
- Medical Support Throughout the Course
- On-Course Hydration & Nutrition Every 5k
- Tech Race Shirt
- Special Marathon Finisher’s Apparel
- 5 Year Age Gap Categories
- Beautiful & Unique 4-inch Finisher's Medal
- Post-Race Activities
- Expo Giveaways
- 6.5 Hour Finish Time Limit (14:50 Pace per Mile)
- Transportation from Finish Line to Start Line
- Authentic Regional Cuisine at Finish Line (until food lasts)
- Free Parking
- Local Hotel Event Discounts
- Beer Garden
- Live Music
RUNNING SERIES Event Dates
Health & Fitness Expo:
Mercedes FEMA Dome in Mercedes, Tx.
Friday, Saturday & Sunday – Times TBD
December 5th – 7th, 2025
Certified Marathon, 6 Person Relays
Start Time: 7AM Donna Main Square Park
Sunday • December 7, 2025
26.2 Point to Point Course
South Texas International Marathon’s (STIM) unique course will take runners through four cities and two counties! This Boston Qualifier marathon will make its start at the “Heart of the Valley”, Donna, Texas. Runners will then cross through historic downtown areas of Weslaco, Mercedes and La Feria. The grand finish line will be at the Mercedes FEMA Dome in Mercedes, Texas..
Event
schedule
FRIDAY ------------------
5:00pm
STIM Expo Opens
STIM Expo opens-Packet Pick Up Opens
7-9pm
STIM VIP MIXER for Special Guest
9:00pm
STIM Expo closes
SATURDAY ----------------
8:00am
STIM Expo Opens
10:00am
Gear Check opens
Gear Check opens at the Finish Line: Mercedes FEMA Dome
2-3pm
Running Discussion Panel
3-4pm
Running Discussion Panel
7:00pm
STIM Expo Closes
8:00pm
Gear Check Closes
Gear Check Closes at the Finish Line
SUNDAY ------------------
4:00am
Gear Check Opens
Gear Check opens at the Finish Line: Mercedes FEMA Dome in Mercedes, Texas
5:00am
Marathon & Relay First Leg
Marathon & Relay First Leg - Buses depart to Start Line: Donna City Square Park.
5:30am
Second Leg Buses
Second Leg Buses depart to Weslaco East High School.
6:00am
Third Leg Buses
Third Leg Buses depart to Mercedes HEB Park.
6:30am
Fourth Leg Buses
Fourth Leg Buses depart to La Feria City Hall
6:45am
National Anthem
7:00am
Fifth Leg Buses
Fifth Leg Buses depart to Frontage 83 Mercedes Out Lets
7:00am
Marathon & Relay Race Start
9:30am
Champions Alley
(Food & Beer: Runners Only) opens at Mercedes FEMA Dome.
1:30pm
Marathon Award Ceremony
Marathon Elite Award Ceremony & All Runners Award Ceremony
1:30pm
Finish Line Area Closes
3:00pm
Closing of the 2024 South Texas International Marathon
