It's about 150 miles to the border.
It seem to be 498 miles from san antonio, Texas to Tampico, Mexico. So figure about as much time to get from San Antonio to Reynosa or Matamoros Mexico as to get from Matamoros or Reynosa to Tampico, Mexico.
711 miles
149 miles
~540 miles
San Antonio is about 140 miles north of the Gulf of Mexico.
It is 734.48 miles according to MapQuest.
It is 721 miles according to Google Maps.
853 miles
705 miles
It is 214 miles from Spring to San Antonio.
105 miles
How many miles from Springtown Tx to San Antonio Tx