| Forfar to Sinop | 1,952.02 mi (3,141.48 km) |
| Forfar to Siran | 2,188.21 mi (3,521.58 km) |
| Forfar to Sirnak | 2,445.37 mi (3,935.45 km) |
| Forfar to Sirvan | 2,401.81 mi (3,865.34 km) |
| Forfar to Sivas | 2,132.47 mi (3,431.88 km) |
| Forfar to Sivasli | 1,938.47 mi (3,119.66 km) |
| Forfar to Siverek | 2,318.06 mi (3,730.55 km) |
| Forfar to Sivrice | 2,282.27 mi (3,672.96 km) |
| Forfar to Sivrihisar | 1,951.42 mi (3,140.50 km) |
| Forfar to Sogut | 1,874.43 mi (3,016.61 km) |
| Forfar to Sogutlu | 1,839.61 mi (2,960.56 km) |
| Forfar to Soke | 1,902.39 mi (3,061.60 km) |
| Forfar to Solhan | 2,320.20 mi (3,734.00 km) |
| Forfar to Soma | 1,830.48 mi (2,945.88 km) |
| Forfar to Sorgun | 2,062.85 mi (3,319.83 km) |
