| Portage to Smyrna (Delaware) | 559.36 mi (900.20 km) |
| Portage to Smyrna (Georgia) | 578.95 mi (931.73 km) |
| Portage to Smyrna (Tennessee) | 433.45 mi (697.57 km) |
| Portage to Snellville (Georgia) | 582.90 mi (938.09 km) |
| Portage to Snoqualmie (Washington) | 1,795.85 mi (2,890.14 km) |
| Portage to Snyder (Texas) | 1,062.89 mi (1,710.56 km) |
| Portage to Socastee (South Carolina) | 688.38 mi (1,107.83 km) |
| Portage to Socorro (Texas) | 1,349.46 mi (2,171.74 km) |
| Portage to Soddy-Daisy (Tennessee) | 480.23 mi (772.86 km) |
| Portage to Solana Beach (California) | 1,833.82 mi (2,951.24 km) |
| Portage to Soledad (California) | 1,937.08 mi (3,117.44 km) |
| Portage to Solon (Ohio) | 221.05 mi (355.74 km) |
| Portage to Somers Point (New Jersey) | 607.86 mi (978.26 km) |
| Portage to Somerset (Kentucky) | 357.34 mi (575.08 km) |
| Portage to Somerset (New Jersey) | 586.46 mi (943.81 km) |
