| Issum to Siran | 1,738.37 mi (2,797.63 km) |
| Issum to Sirnak | 1,993.88 mi (3,208.83 km) |
| Issum to Sirvan | 1,951.61 mi (3,140.81 km) |
| Issum to Sivas | 1,669.91 mi (2,687.46 km) |
| Issum to Sivasli | 1,439.88 mi (2,317.26 km) |
| Issum to Siverek | 1,853.87 mi (2,983.52 km) |
| Issum to Sivrice | 1,822.07 mi (2,932.33 km) |
| Issum to Sivrihisar | 1,463.73 mi (2,355.64 km) |
| Issum to Sogut | 1,384.24 mi (2,227.71 km) |
| Issum to Sogutlu | 1,355.31 mi (2,181.16 km) |
| Issum to Soke | 1,394.91 mi (2,244.90 km) |
| Issum to Solhan | 1,871.20 mi (3,011.40 km) |
| Issum to Soma | 1,327.80 mi (2,136.88 km) |
| Issum to Sorgun | 1,592.49 mi (2,562.87 km) |
| Issum to Suhut | 1,469.94 mi (2,365.65 km) |
