| San Marcos to Fontana (California) | 68.46 mi (110.17 km) |
| San Marcos to Foothill Farms (California) | 448.95 mi (722.52 km) |
| San Marcos to Fords (New Jersey) | 2,400.31 mi (3,862.92 km) |
| San Marcos to Forest (Virginia) | 2,143.41 mi (3,449.48 km) |
| San Marcos to Forest Acres (South Carolina) | 2,073.82 mi (3,337.49 km) |
| San Marcos to Forest City (Florida) | 2,130.44 mi (3,428.61 km) |
| San Marcos to Forest Grove (Oregon) | 912.23 mi (1,468.10 km) |
| San Marcos to Forest Hill (Texas) | 1,153.66 mi (1,856.63 km) |
| San Marcos to Forest Hills (Michigan) | 1,839.28 mi (2,960.04 km) |
| San Marcos to Forest Lake (Minnesota) | 1,534.17 mi (2,469.00 km) |
| San Marcos to Forest Park (Georgia) | 1,885.63 mi (3,034.62 km) |
| San Marcos to Forest Park (Illinois) | 1,708.41 mi (2,749.42 km) |
| San Marcos to Forest Park (Ohio) | 1,858.28 mi (2,990.61 km) |
| San Marcos to Forestville (Maryland) | 2,268.72 mi (3,651.16 km) |
| San Marcos to Forestville (Ohio) | 1,867.58 mi (3,005.58 km) |
