| Castro Valley to Seysses | 5,800.71 mi (9,335.35 km) |
| Castro Valley to Sin-le-Noble | 5,500.73 mi (8,852.57 km) |
| Castro Valley to Six-Fours-les-Plages | 5,967.92 mi (9,604.43 km) |
| Castro Valley to Soissons | 5,558.07 mi (8,944.85 km) |
| Castro Valley to Soisy-sous-Montmorency | 5,548.12 mi (8,928.83 km) |
| Castro Valley to Sollies-Pont | 5,970.07 mi (9,607.90 km) |
| Castro Valley to Somain | 5,505.86 mi (8,860.83 km) |
| Castro Valley to Sorgues | 5,889.34 mi (9,477.98 km) |
| Castro Valley to Sotteville-les-Rouen | 5,489.96 mi (8,835.24 km) |
| Castro Valley to Soyaux | 5,654.08 mi (9,099.37 km) |
| Castro Valley to Stains | 5,552.58 mi (8,936.02 km) |
| Castro Valley to Stiring-Wendel | 5,671.33 mi (9,127.13 km) |
| Castro Valley to Strasbourg | 5,727.75 mi (9,217.93 km) |
| Castro Valley to Sucy-en-Brie | 5,566.12 mi (8,957.81 km) |
| Castro Valley to Suresnes | 5,551.81 mi (8,934.78 km) |
