| Portsmouth to Seysses | 517.27 mi (832.47 km) |
| Portsmouth to Sin-le-Noble | 186.76 mi (300.56 km) |
| Portsmouth to Six-Fours-les-Plages | 623.49 mi (1,003.42 km) |
| Portsmouth to Soissons | 218.83 mi (352.17 km) |
| Portsmouth to Soisy-sous-Montmorency | 196.18 mi (315.73 km) |
| Portsmouth to Sollies-Pont | 623.62 mi (1,003.62 km) |
| Portsmouth to Somain | 194.07 mi (312.33 km) |
| Portsmouth to Sorgues | 545.70 mi (878.23 km) |
| Portsmouth to Sotteville-les-Rouen | 136.44 mi (219.58 km) |
| Portsmouth to Soyaux | 361.75 mi (582.19 km) |
| Portsmouth to Stains | 200.76 mi (323.09 km) |
| Portsmouth to Stiring-Wendel | 372.67 mi (599.76 km) |
| Portsmouth to Strasbourg | 423.26 mi (681.18 km) |
| Portsmouth to Sucy-en-Brie | 213.79 mi (344.05 km) |
| Portsmouth to Suresnes | 198.98 mi (320.23 km) |
