| San Marcos to Friendly (Maryland) | 2,264.00 mi (3,643.55 km) |
| San Marcos to Friendswood (Texas) | 1,318.47 mi (2,121.87 km) |
| San Marcos to Frisco (Texas) | 1,175.55 mi (1,891.87 km) |
| San Marcos to Front Royal (Virginia) | 2,197.97 mi (3,537.29 km) |
| San Marcos to Fruit Cove (Florida) | 2,092.65 mi (3,367.80 km) |
| San Marcos to Fruita (Colorado) | 627.92 mi (1,010.53 km) |
| San Marcos to Fruitville (Florida) | 2,100.72 mi (3,380.79 km) |
| San Marcos to Fuller Heights (Florida) | 2,114.22 mi (3,402.52 km) |
| San Marcos to Fullerton (California) | 67.55 mi (108.72 km) |
| San Marcos to Fullerton (Pennsylvania) | 2,338.74 mi (3,763.84 km) |
| San Marcos to Fulshear (Texas) | 1,275.59 mi (2,052.87 km) |
| San Marcos to Fulton (Missouri) | 1,459.06 mi (2,348.13 km) |
| San Marcos to Fulton (New York) | 2,295.85 mi (3,694.82 km) |
| San Marcos to Fuquay-Varina (North Carolina) | 2,182.67 mi (3,512.67 km) |
| San Marcos to Gadsden (Alabama) | 1,787.83 mi (2,877.23 km) |
