| Allentown to San Luis Obispo (California) | 2,463.03 mi (3,963.87 km) |
| Allentown to San Marcos (California) | 2,339.19 mi (3,764.56 km) |
| Allentown to San Marcos (Texas) | 1,461.80 mi (2,352.54 km) |
| Allentown to San Marino (California) | 2,360.34 mi (3,798.60 km) |
| Allentown to San Mateo (California) | 2,491.43 mi (4,009.57 km) |
| Allentown to San Pablo (California) | 2,483.52 mi (3,996.83 km) |
| Allentown to San Rafael (California) | 2,492.12 mi (4,010.67 km) |
| Allentown to San Ramon (California) | 2,467.20 mi (3,970.58 km) |
| Allentown to San Tan Valley (Arizona) | 2,043.62 mi (3,288.88 km) |
| Allentown to Sand Springs (Oklahoma) | 1,157.46 mi (1,862.74 km) |
| Allentown to Sandusky (Ohio) | 381.16 mi (613.42 km) |
| Allentown to Sandy (Oregon) | 2,354.11 mi (3,788.57 km) |
| Allentown to Sandy (Utah) | 1,894.87 mi (3,049.50 km) |
| Allentown to Sandy Springs (Georgia) | 670.83 mi (1,079.59 km) |
| Allentown to Sanford (Florida) | 879.27 mi (1,415.04 km) |
