| San Marcos to Pelham (Alabama) | 1,751.81 mi (2,819.27 km) |
| San Marcos to Pell City (Alabama) | 1,777.45 mi (2,860.53 km) |
| San Marcos to Pella (Iowa) | 1,444.59 mi (2,324.84 km) |
| San Marcos to Pembroke Pines (Florida) | 2,255.48 mi (3,629.84 km) |
| San Marcos to Pendleton (Oregon) | 870.87 mi (1,401.53 km) |
| San Marcos to Pensacola (Florida) | 1,764.70 mi (2,840.02 km) |
| San Marcos to Peoria (Arizona) | 284.56 mi (457.96 km) |
| San Marcos to Peoria (Illinois) | 1,602.32 mi (2,578.68 km) |
| San Marcos to Perris (California) | 45.33 mi (72.95 km) |
| San Marcos to Perry (Georgia) | 1,934.62 mi (3,113.47 km) |
| San Marcos to Perry Hall (Maryland) | 2,288.20 mi (3,682.50 km) |
| San Marcos to Perrysburg (Ohio) | 1,917.69 mi (3,086.23 km) |
| San Marcos to Perth Amboy (New Jersey) | 2,402.45 mi (3,866.37 km) |
| San Marcos to Peru (Indiana) | 1,785.51 mi (2,873.50 km) |
| San Marcos to Petal (Mississippi) | 1,632.56 mi (2,627.36 km) |
