| Allentown to Southern Pines (North Carolina) | 430.30 mi (692.50 km) |
| Allentown to Southfield (Michigan) | 422.88 mi (680.56 km) |
| Allentown to Southgate (Michigan) | 415.59 mi (668.83 km) |
| Allentown to Southlake (Texas) | 1,306.05 mi (2,101.88 km) |
| Allentown to Spanaway (Washington) | 2,345.63 mi (3,774.93 km) |
| Allentown to Spanish Fork (Utah) | 1,890.96 mi (3,043.21 km) |
| Allentown to Spanish Lake (Missouri) | 792.18 mi (1,274.89 km) |
| Allentown to Spanish Springs (Nevada) | 2,310.79 mi (3,718.85 km) |
| Allentown to Sparks (Nevada) | 2,314.78 mi (3,725.28 km) |
| Allentown to Spartanburg (South Carolina) | 525.59 mi (845.86 km) |
| Allentown to Spearfish (South Dakota) | 1,459.88 mi (2,349.46 km) |
| Allentown to Speedway (Indiana) | 570.88 mi (918.74 km) |
| Allentown to Spencer (Iowa) | 1,025.17 mi (1,649.85 km) |
| Allentown to Spokane (Washington) | 2,109.87 mi (3,395.51 km) |
| Allentown to Spokane Valley (Washington) | 2,100.66 mi (3,380.68 km) |
