| Chepstow to Solofra | 1,116.87 mi (1,797.43 km) |
| Chepstow to Somma Lombardo | 661.28 mi (1,064.22 km) |
| Chepstow to Somma Vesuviana | 1,100.43 mi (1,770.96 km) |
| Chepstow to Sommacampagna | 752.51 mi (1,211.05 km) |
| Chepstow to Sona | 750.42 mi (1,207.68 km) |
| Chepstow to Sondrio | 682.34 mi (1,098.13 km) |
| Chepstow to Sora | 1,028.61 mi (1,655.39 km) |
| Chepstow to Sorbolo | 763.01 mi (1,227.95 km) |
| Chepstow to Soresina | 721.19 mi (1,160.64 km) |
| Chepstow to Sorisole | 693.34 mi (1,115.83 km) |
| Chepstow to Sorrento | 1,110.92 mi (1,787.85 km) |
| Chepstow to Sorso | 920.06 mi (1,480.69 km) |
| Chepstow to Sortino | 1,321.20 mi (2,126.26 km) |
| Chepstow to Soverato Marina | 1,288.25 mi (2,073.25 km) |
| Chepstow to Sovicille | 866.65 mi (1,394.74 km) |
