| Niksar to Sestu | 1,473.14 mi (2,370.79 km) |
| Niksar to Settimo Torinese | 1,503.27 mi (2,419.27 km) |
| Niksar to Seveso | 1,438.61 mi (2,315.22 km) |
| Niksar to Sezze | 1,243.13 mi (2,000.62 km) |
| Niksar to Siano | 1,163.74 mi (1,872.86 km) |
| Niksar to Siena | 1,325.45 mi (2,133.10 km) |
| Niksar to Signa | 1,337.01 mi (2,151.72 km) |
| Niksar to Silea | 1,286.81 mi (2,070.93 km) |
| Niksar to Silvi Paese | 1,185.37 mi (1,907.66 km) |
| Niksar to Sinalunga | 1,305.31 mi (2,100.69 km) |
| Niksar to Siniscola | 1,425.29 mi (2,293.78 km) |
| Niksar to Sinnai | 1,467.28 mi (2,361.36 km) |
| Niksar to Siracusa | 1,188.69 mi (1,913.02 km) |
| Niksar to Solaro | 1,441.05 mi (2,319.15 km) |
| Niksar to Soliera | 1,347.81 mi (2,169.09 km) |
