Big Bend to San Marcos, Texas: Road Trip Guide & Distance

How far is Big Bend from San Marcos, Texas?

The distance from Big Bend to San Marcos, Texas is 322 miles (518.2 km) as the crow flies. San Marcos, Texas is located E of Big Bend. By car, the driving distance is approximately 386.4 miles, taking about 7h 46min. A direct flight would take roughly 1h 9min. Both are located in United States.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility.

Coordinates come from public place data for Big Bend and San Marcos, Texas. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.