| Rhondda to Seysses | 602.37 mi (969.42 km) |
| Rhondda to Sin-le-Noble | 296.80 mi (477.66 km) |
| Rhondda to Six-Fours-les-Plages | 728.89 mi (1,173.04 km) |
| Rhondda to Soissons | 333.89 mi (537.35 km) |
| Rhondda to Soisy-sous-Montmorency | 310.72 mi (500.05 km) |
| Rhondda to Sollies-Pont | 729.89 mi (1,174.64 km) |
| Rhondda to Somain | 303.89 mi (489.06 km) |
| Rhondda to Sorgues | 650.46 mi (1,046.82 km) |
| Rhondda to Sotteville-les-Rouen | 249.86 mi (402.11 km) |
| Rhondda to Soyaux | 444.52 mi (715.38 km) |
| Rhondda to Stains | 315.31 mi (507.45 km) |
| Rhondda to Stiring-Wendel | 484.71 mi (780.06 km) |
| Rhondda to Strasbourg | 536.59 mi (863.56 km) |
| Rhondda to Sucy-en-Brie | 328.03 mi (527.92 km) |
| Rhondda to Suresnes | 312.98 mi (503.69 km) |
