| Penarth to Superior (Colorado) | 4,578.21 mi (7,367.91 km) |
| Penarth to Superior (Wisconsin) | 3,783.23 mi (6,088.51 km) |
| Penarth to Surprise (Arizona) | 5,167.82 mi (8,316.80 km) |
| Penarth to Susanville (California) | 5,061.10 mi (8,145.05 km) |
| Penarth to Sussex (Wisconsin) | 3,799.06 mi (6,114.00 km) |
| Penarth to Suwanee (Georgia) | 4,055.91 mi (6,527.36 km) |
| Penarth to Swansea (Illinois) | 4,079.75 mi (6,565.72 km) |
| Penarth to Sweetwater (Florida) | 4,306.73 mi (6,931.02 km) |
| Penarth to Sweetwater (Texas) | 4,788.28 mi (7,705.99 km) |
| Penarth to Sycamore (Illinois) | 3,868.37 mi (6,225.54 km) |
| Penarth to Sylacauga (Alabama) | 4,188.27 mi (6,740.37 km) |
| Penarth to Sylvania (Ohio) | 3,687.17 mi (5,933.92 km) |
| Penarth to Syosset (New York) | 3,312.65 mi (5,331.20 km) |
| Penarth to Syracuse (New York) | 3,327.54 mi (5,355.16 km) |
| Penarth to Syracuse (Utah) | 4,753.70 mi (7,650.33 km) |
