| Alfter to Siran | 1,700.84 mi (2,737.24 km) |
| Alfter to Sirnak | 1,955.47 mi (3,147.02 km) |
| Alfter to Sirvan | 1,913.55 mi (3,079.56 km) |
| Alfter to Sivas | 1,629.73 mi (2,622.79 km) |
| Alfter to Sivasli | 1,390.64 mi (2,238.02 km) |
| Alfter to Siverek | 1,812.95 mi (2,917.66 km) |
| Alfter to Sivrice | 1,782.10 mi (2,868.01 km) |
| Alfter to Sivrihisar | 1,417.68 mi (2,281.54 km) |
| Alfter to Sogut | 1,337.63 mi (2,152.71 km) |
| Alfter to Sogutlu | 1,310.43 mi (2,108.93 km) |
| Alfter to Soke | 1,342.57 mi (2,160.67 km) |
| Alfter to Solhan | 1,833.55 mi (2,950.82 km) |
| Alfter to Soma | 1,277.33 mi (2,055.67 km) |
| Alfter to Sorgun | 1,550.65 mi (2,495.53 km) |
| Alfter to Suhut | 1,421.63 mi (2,287.90 km) |
