| Castro Valley to Saarijarvi | 5,266.34 mi (8,475.35 km) |
| Castro Valley to Salo | 5,377.66 mi (8,654.51 km) |
| Castro Valley to Sastamala | 5,315.79 mi (8,554.94 km) |
| Castro Valley to Savonlinna | 5,367.45 mi (8,638.07 km) |
| Castro Valley to Seinajoki | 5,226.24 mi (8,410.82 km) |
| Castro Valley to Siilinjarvi | 5,275.36 mi (8,489.87 km) |
| Castro Valley to Sipoo | 5,411.19 mi (8,708.46 km) |
| Castro Valley to Sippola | 5,413.49 mi (8,712.17 km) |
| Castro Valley to Sodankyla | 4,990.18 mi (8,030.91 km) |
| Castro Valley to Somero | 5,368.62 mi (8,639.96 km) |
| Castro Valley to Sotkamo | 5,217.60 mi (8,396.91 km) |
| Castro Valley to Tampere | 5,319.19 mi (8,560.40 km) |
| Castro Valley to Tornio | 5,057.31 mi (8,138.95 km) |
| Castro Valley to Turku | 5,360.08 mi (8,626.21 km) |
| Castro Valley to Tuusula | 5,404.33 mi (8,697.44 km) |
