Douglas to San Marcos, Texas: Road Trip Guide & Distance

697 miles 1121.7 km · straight line
836.4 miles estimated 1346 km · driving distance
16h 50min estimated drive time
$80 - $99 estimated fuel cost
~1h 54min flight time
95° E bearing direction

How far is Douglas from San Marcos, Texas?

The distance from Douglas to San Marcos, Texas is 697 miles (1121.7 km) as the crow flies. San Marcos, Texas is located E of Douglas. By car, the driving distance is approximately 836.4 miles, taking about 16h 50min. A direct flight would take roughly 1h 54min. Both are located in United States — Douglas in Arizona and San Marcos, Texas in Texas.

This is a serious multi-day road trip! We strongly recommend breaking this journey up with an overnight stay to ensure you arrive safely and refreshed. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. For a trip of this distance, flying is significantly faster. However, driving offers the flexibility to explore stops along the way.

Coordinates come from public place data for Douglas 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.

How to Get from Douglas to San Marcos, Texas

Method Time Est. Cost Best For
Drive 16h 50min $80 - $99 Flexible stops
Fly ~1h 54min $80–200* Speed
Bus ~20h 12min $67–$125* Budget
Train ~21h 53min $100–$293* Comfort

Suggested Stops Between Douglas & San Marcos, Texas

Quick Facts

Douglas
31.34°N, 109.55°W
America/Phoenix
1222m elevation
San Marcos, Texas
29.88°N, 97.94°W
America/Chicago
188m elevation
Explore more routes from San Marcos, Texas

Did You Know?

  • At walking speed (3 mph), it would take about 232 hours of non-stop walking
  • By bicycle at 12 mph, the journey would take roughly 58 hours
  • You could travel this distance about 35.7 times to circle the Earth's equator
Data Sources & Estimate Notes GeoNames · OpenStreetMap · Driving distance estimated using road factor coefficients