| Castro Valley to Senftenberg | 5,725.52 mi (9,214.34 km) |
| Castro Valley to Siegburg | 5,592.15 mi (8,999.69 km) |
| Castro Valley to Siegen | 5,609.54 mi (9,027.68 km) |
| Castro Valley to Sigmaringen | 5,795.95 mi (9,327.67 km) |
| Castro Valley to Simbach am Inn | 5,887.27 mi (9,474.64 km) |
| Castro Valley to Simmerath | 5,578.30 mi (8,977.40 km) |
| Castro Valley to Sindelfingen | 5,755.41 mi (9,262.44 km) |
| Castro Valley to Sinsheim | 5,722.53 mi (9,209.52 km) |
| Castro Valley to Sinzheim | 5,729.71 mi (9,221.08 km) |
| Castro Valley to Sinzig | 5,607.32 mi (9,024.12 km) |
| Castro Valley to Soest | 5,574.43 mi (8,971.18 km) |
| Castro Valley to Solingen | 5,569.10 mi (8,962.59 km) |
| Castro Valley to Soltau | 5,540.86 mi (8,917.15 km) |
| Castro Valley to Sommerda | 5,674.64 mi (9,132.45 km) |
| Castro Valley to Sondershausen | 5,656.82 mi (9,103.77 km) |
