| Boulder to Sonneberg | 5,104.14 mi (8,214.32 km) |
| Boulder to Sonsbeck | 4,892.17 mi (7,873.19 km) |
| Boulder to Sonthofen | 5,212.58 mi (8,388.84 km) |
| Boulder to Spaichingen | 5,134.15 mi (8,262.61 km) |
| Boulder to Spelle | 4,892.41 mi (7,873.57 km) |
| Boulder to Spenge | 4,935.17 mi (7,942.39 km) |
| Boulder to Speyer | 5,065.17 mi (8,151.60 km) |
| Boulder to Spiesen-Elversberg | 5,022.21 mi (8,082.47 km) |
| Boulder to Spremberg | 5,142.31 mi (8,275.75 km) |
| Boulder to Springe | 4,964.51 mi (7,989.61 km) |
| Boulder to Sprockhovel | 4,931.42 mi (7,936.35 km) |
| Boulder to Stade | 4,897.30 mi (7,881.43 km) |
| Boulder to Stadtallendorf | 5,012.90 mi (8,067.48 km) |
| Boulder to Stadthagen | 4,948.80 mi (7,964.33 km) |
| Boulder to Stadtlohn | 4,892.01 mi (7,872.93 km) |
