| Tortona to Siran | 1,564.80 mi (2,518.31 km) |
| Tortona to Sirnak | 1,804.59 mi (2,904.20 km) |
| Tortona to Sirvan | 1,766.71 mi (2,843.25 km) |
| Tortona to Sivas | 1,473.30 mi (2,371.05 km) |
| Tortona to Sivasli | 1,157.68 mi (1,863.11 km) |
| Tortona to Siverek | 1,644.29 mi (2,646.23 km) |
| Tortona to Sivrice | 1,622.61 mi (2,611.34 km) |
| Tortona to Sivrihisar | 1,215.68 mi (1,956.45 km) |
| Tortona to Sogut | 1,133.78 mi (1,824.64 km) |
| Tortona to Sogutlu | 1,124.76 mi (1,810.13 km) |
| Tortona to Soke | 1,077.98 mi (1,734.85 km) |
| Tortona to Solhan | 1,692.39 mi (2,723.64 km) |
| Tortona to Soma | 1,036.38 mi (1,667.90 km) |
| Tortona to Sorgun | 1,382.45 mi (2,224.85 km) |
| Tortona to Suhut | 1,196.95 mi (1,926.31 km) |
