| Risca to Superior (Colorado) | 4,573.94 mi (7,361.05 km) |
| Risca to Superior (Wisconsin) | 3,779.41 mi (6,082.36 km) |
| Risca to Surprise (Arizona) | 5,163.44 mi (8,309.75 km) |
| Risca to Susanville (California) | 5,054.78 mi (8,134.88 km) |
| Risca to Sussex (Wisconsin) | 3,796.42 mi (6,109.75 km) |
| Risca to Suwanee (Georgia) | 4,055.62 mi (6,526.89 km) |
| Risca to Swansea (Illinois) | 4,077.76 mi (6,562.52 km) |
| Risca to Sweetwater (Florida) | 4,308.50 mi (6,933.87 km) |
| Risca to Sweetwater (Texas) | 4,785.83 mi (7,702.04 km) |
| Risca to Sycamore (Illinois) | 3,865.90 mi (6,221.57 km) |
| Risca to Sylacauga (Alabama) | 4,187.81 mi (6,739.63 km) |
| Risca to Sylvania (Ohio) | 3,685.40 mi (5,931.08 km) |
| Risca to Syosset (New York) | 3,312.47 mi (5,330.91 km) |
| Risca to Syracuse (New York) | 3,326.48 mi (5,353.45 km) |
| Risca to Syracuse (Utah) | 4,748.37 mi (7,641.77 km) |
