| San Marcos to Pawtucket (Rhode Island) | 2,550.34 mi (4,104.37 km) |
| San Marcos to Payson (Arizona) | 345.14 mi (555.44 km) |
| San Marcos to Payson (Utah) | 563.86 mi (907.44 km) |
| San Marcos to Peabody (Massachusetts) | 2,569.82 mi (4,135.73 km) |
| San Marcos to Peachtree City (Georgia) | 1,875.83 mi (3,018.86 km) |
| San Marcos to Peachtree Corners (Georgia) | 1,889.56 mi (3,040.95 km) |
| San Marcos to Pearl (Mississippi) | 1,571.33 mi (2,528.81 km) |
| San Marcos to Pearl City (Hawaii) | 2,613.94 mi (4,206.73 km) |
| San Marcos to Pearl River (New York) | 2,415.53 mi (3,887.42 km) |
| San Marcos to Pearland (Texas) | 1,310.41 mi (2,108.90 km) |
| San Marcos to Pebble Creek (Florida) | 2,089.22 mi (3,362.27 km) |
| San Marcos to Pecan Grove (Texas) | 1,285.44 mi (2,068.71 km) |
| San Marcos to Pecos (Texas) | 806.12 mi (1,297.32 km) |
| San Marcos to Peekskill (New York) | 2,419.53 mi (3,893.86 km) |
| San Marcos to Pekin (Illinois) | 1,599.58 mi (2,574.28 km) |
