Miles between Upland, CA and San Marcos, TX

There are
1,339 mi
from Upland, CA to San Marcos, TX

That's the driving distance. It would take 22 hours 58 mins to go from Upland, California to San Marcos, Texas.

The flight distance (direct flight from Upland, CA to San Marcos, TX) is 1,188.85 mi.

1,339 mi = 1.61 kms