| Castro Valley to Sonneberg | 5,721.52 mi (9,207.90 km) |
| Castro Valley to Sonsbeck | 5,526.21 mi (8,893.57 km) |
| Castro Valley to Sonthofen | 5,857.00 mi (9,425.93 km) |
| Castro Valley to Spaichingen | 5,783.29 mi (9,307.30 km) |
| Castro Valley to Spelle | 5,514.28 mi (8,874.38 km) |
| Castro Valley to Spenge | 5,553.44 mi (8,937.40 km) |
| Castro Valley to Speyer | 5,706.39 mi (9,183.55 km) |
| Castro Valley to Spiesen-Elversberg | 5,670.71 mi (9,126.12 km) |
| Castro Valley to Spremberg | 5,730.94 mi (9,223.06 km) |
| Castro Valley to Springe | 5,576.18 mi (8,973.99 km) |
| Castro Valley to Sprockhovel | 5,562.74 mi (8,952.37 km) |
| Castro Valley to Stade | 5,497.88 mi (8,847.98 km) |
| Castro Valley to Stadtallendorf | 5,638.79 mi (9,074.75 km) |
| Castro Valley to Stadthagen | 5,561.49 mi (8,950.36 km) |
| Castro Valley to Stadtlohn | 5,519.97 mi (8,883.54 km) |
