South Texas International Marathon
Race Date
Dec 7, 2025
Location
Donna, TX
The Experience
We will have 3 different distances for the South Texas International Marathon. The Marathon is a Certified Marathon which is a Boston Marathon Qualifier and Olympic Trials Qualifier. The Marathon & the 6 -Person Relay will start at 6:30am in Donna, Texas in front of the iconic Bennie La Prade Stadium. The Half Marathon will start at 7:30am in Mercedes, Texas on US Bus 83 about 30 meters west of the Cameron County Line.
Logistics
Race Day
Sunday, December 7, 2025
Start Time
7:30 AM
Giveaway
T-Shirt
Start Location
2302 Wood Ave., Donna, TX, 78537
Course Info
USATF CertifiedCourse Type
Loop Course
Terrain
road
Difficulty
Ultra-Flat
Elevation Gain
0'
Net Drop/km
0 m (Flat)
Separation
9.2%
Also Offers
USATF Certified Course
TX24042LAB · South Texas International Half Marathon
Relatively flat with minimal net elevation change.
Quality Score
Solid Pick422 years running
~81 finishers a year
growing or steady
8% returning runners
USATF certified · 2 timing sources
runners from 3 states
winner 1:18:05
typical high 78°F
Race Day Weather
5-year historical avgStart (Low)
62°
Afternoon (High)
78°
Warm — hydration strategy is key, start conservatively
0.0"
Precipitation
13 mph
Wind
77%
Humidity
Historical Finish Times
How 162 finishers actually crossed the line across 2 years.
Most recent
2025
Total finishers
162
Median time
2:06:38
Latest turnout
90
States
3
Turnout by year
2024–2025
Hover the histogram to inspect specific finish times.
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