| Pen-y-Bont ar Ogwr to Seysses | 598.28 mi (962.83 km) |
| Pen-y-Bont ar Ogwr to Sin-le-Noble | 301.78 mi (485.66 km) |
| Pen-y-Bont ar Ogwr to Six-Fours-les-Plages | 727.63 mi (1,171.00 km) |
| Pen-y-Bont ar Ogwr to Soissons | 337.15 mi (542.59 km) |
| Pen-y-Bont ar Ogwr to Soisy-sous-Montmorency | 312.51 mi (502.93 km) |
| Pen-y-Bont ar Ogwr to Sollies-Pont | 728.80 mi (1,172.89 km) |
| Pen-y-Bont ar Ogwr to Somain | 308.92 mi (497.15 km) |
| Pen-y-Bont ar Ogwr to Sorgues | 649.12 mi (1,044.67 km) |
| Pen-y-Bont ar Ogwr to Sotteville-les-Rouen | 251.28 mi (404.40 km) |
| Pen-y-Bont ar Ogwr to Soyaux | 440.44 mi (708.82 km) |
| Pen-y-Bont ar Ogwr to Stains | 317.11 mi (510.34 km) |
| Pen-y-Bont ar Ogwr to Stiring-Wendel | 489.36 mi (787.56 km) |
| Pen-y-Bont ar Ogwr to Strasbourg | 540.84 mi (870.40 km) |
| Pen-y-Bont ar Ogwr to Sucy-en-Brie | 329.64 mi (530.50 km) |
| Pen-y-Bont ar Ogwr to Suresnes | 314.49 mi (506.12 km) |
