| Pontneddfechan to Superior (Colorado) | 4,550.65 mi (7,323.57 km) |
| Pontneddfechan to Superior (Wisconsin) | 3,755.99 mi (6,044.68 km) |
| Pontneddfechan to Surprise (Arizona) | 5,140.18 mi (8,272.33 km) |
| Pontneddfechan to Susanville (California) | 5,032.52 mi (8,099.06 km) |
| Pontneddfechan to Sussex (Wisconsin) | 3,772.84 mi (6,071.79 km) |
| Pontneddfechan to Suwanee (Georgia) | 4,032.32 mi (6,489.39 km) |
| Pontneddfechan to Swansea (Illinois) | 4,054.17 mi (6,524.56 km) |
| Pontneddfechan to Sweetwater (Florida) | 4,286.11 mi (6,897.83 km) |
| Pontneddfechan to Sweetwater (Texas) | 4,762.23 mi (7,664.07 km) |
| Pontneddfechan to Sycamore (Illinois) | 3,842.31 mi (6,183.60 km) |
| Pontneddfechan to Sylacauga (Alabama) | 4,164.46 mi (6,702.05 km) |
| Pontneddfechan to Sylvania (Ohio) | 3,661.83 mi (5,893.15 km) |
| Pontneddfechan to Syosset (New York) | 3,289.21 mi (5,293.47 km) |
| Pontneddfechan to Syracuse (New York) | 3,303.00 mi (5,315.66 km) |
| Pontneddfechan to Syracuse (Utah) | 4,725.51 mi (7,604.98 km) |
