693.6 miles:
12 hours,
17 minutes
Highlighting the range of the Rio Grande Valley, this trip travels along eight-lane interstates and charming highways through the plains, borderlands and valleys of South Texas. Blue skies dotted by billowy clouds seem to go on forever, the climate varies from semi-arid to humid subtropical, and friendly greetings from natives tend to fluctuate between “hola” and “howdy.”