| Sinop to Sestu | 1,373.32 mi (2,210.14 km) |
| Sinop to Settimo Torinese | 1,380.54 mi (2,221.77 km) |
| Sinop to Seveso | 1,314.28 mi (2,115.13 km) |
| Sinop to Sezze | 1,135.58 mi (1,827.54 km) |
| Sinop to Siano | 1,060.81 mi (1,707.22 km) |
| Sinop to Siena | 1,209.21 mi (1,946.04 km) |
| Sinop to Signa | 1,218.93 mi (1,961.67 km) |
| Sinop to Silea | 1,161.94 mi (1,869.96 km) |
| Sinop to Silvi Paese | 1,072.98 mi (1,726.79 km) |
| Sinop to Sinalunga | 1,189.54 mi (1,914.38 km) |
| Sinop to Siniscola | 1,320.20 mi (2,124.66 km) |
| Sinop to Sinnai | 1,367.54 mi (2,200.85 km) |
| Sinop to Siracusa | 1,109.31 mi (1,785.27 km) |
| Sinop to Solaro | 1,316.81 mi (2,119.20 km) |
| Sinop to Soliera | 1,226.23 mi (1,973.42 km) |
