| Castro Valley to Solymar | 6,071.84 mi (9,771.69 km) |
| Castro Valley to Sopron | 6,010.47 mi (9,672.91 km) |
| Castro Valley to Szarvas | 6,152.70 mi (9,901.82 km) |
| Castro Valley to Szazhalombatta | 6,088.89 mi (9,799.13 km) |
| Castro Valley to Szeged | 6,180.43 mi (9,946.45 km) |
| Castro Valley to Szeghalom | 6,156.82 mi (9,908.45 km) |
| Castro Valley to Szekesfehervar | 6,083.30 mi (9,790.12 km) |
| Castro Valley to Szekszard | 6,140.47 mi (9,882.13 km) |
| Castro Valley to Szentendre | 6,068.28 mi (9,765.95 km) |
| Castro Valley to Szentes | 6,159.10 mi (9,912.11 km) |
| Castro Valley to Szentgotthard | 6,046.28 mi (9,730.55 km) |
| Castro Valley to Szigethalom | 6,090.19 mi (9,801.22 km) |
| Castro Valley to Szigetszentmiklos | 6,089.32 mi (9,799.82 km) |
| Castro Valley to Szigetvar | 6,137.01 mi (9,876.57 km) |
| Castro Valley to Szolnok | 6,126.03 mi (9,858.89 km) |
