| Portage to Superior (Colorado) | 1,028.97 mi (1,655.96 km) |
| Portage to Superior (Wisconsin) | 445.75 mi (717.36 km) |
| Portage to Surprise (Arizona) | 1,569.25 mi (2,525.46 km) |
| Portage to Susanville (California) | 1,809.01 mi (2,911.32 km) |
| Portage to Sussex (Wisconsin) | 148.48 mi (238.96 km) |
| Portage to Suwanee (Georgia) | 569.07 mi (915.83 km) |
| Portage to Swansea (Illinois) | 342.10 mi (550.55 km) |
| Portage to Sweetwater (Florida) | 1,172.66 mi (1,887.21 km) |
| Portage to Sweetwater (Texas) | 1,053.10 mi (1,694.80 km) |
| Portage to Sycamore (Illinois) | 159.11 mi (256.06 km) |
| Portage to Sylacauga (Alabama) | 624.43 mi (1,004.92 km) |
| Portage to Sylvania (Ohio) | 102.43 mi (164.84 km) |
| Portage to Syosset (New York) | 632.20 mi (1,017.42 km) |
| Portage to Syracuse (New York) | 483.54 mi (778.19 km) |
| Portage to Syracuse (Utah) | 1,363.88 mi (2,194.96 km) |
