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

How far is McKinney from San Marcos, Texas?

The distance from McKinney to San Marcos, Texas is 242 miles (389.4 km) as the crow flies. San Marcos, Texas is located SSW of McKinney. By car, the driving distance is approximately 302.5 miles, taking about 6h 5min. A direct flight would take roughly 59min. Both are located in United States.

For a drive of this length, it's recommended to plan at least one quick rest stop to stretch your legs and grab a coffee. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare.

Coordinates come from public place data for McKinney 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.