| San Marcos to Poinciana (Florida) | 2,139.71 mi (3,443.53 km) |
| San Marcos to Point Pleasant (New Jersey) | 2,414.21 mi (3,885.30 km) |
| San Marcos to Pomona (California) | 72.23 mi (116.25 km) |
| San Marcos to Pompano Beach (Florida) | 2,261.67 mi (3,639.81 km) |
| San Marcos to Pompton Lakes (New Jersey) | 2,400.95 mi (3,863.96 km) |
| San Marcos to Pompton Plains (New Jersey) | 2,399.87 mi (3,862.22 km) |
| San Marcos to Ponca City (Oklahoma) | 1,163.31 mi (1,872.17 km) |
| San Marcos to Ponce (Puerto Rico) | 3,285.13 mi (5,286.90 km) |
| San Marcos to Pontiac (Illinois) | 1,654.15 mi (2,662.09 km) |
| San Marcos to Pontiac (Michigan) | 1,945.71 mi (3,131.31 km) |
| San Marcos to Pooler (Georgia) | 2,081.16 mi (3,349.30 km) |
| San Marcos to Poplar Bluff (Missouri) | 1,531.00 mi (2,463.90 km) |
| San Marcos to Poquoson (Virginia) | 2,305.16 mi (3,709.79 km) |
| San Marcos to Port Angeles (Washington) | 1,085.19 mi (1,746.44 km) |
| San Marcos to Port Arthur (Texas) | 1,385.31 mi (2,229.44 km) |
