| Boussu to Siran | 1,835.33 mi (2,953.67 km) |
| Boussu to Sirnak | 2,088.90 mi (3,361.76 km) |
| Boussu to Sirvan | 2,047.37 mi (3,294.92 km) |
| Boussu to Sivas | 1,761.48 mi (2,834.83 km) |
| Boussu to Sivasli | 1,508.26 mi (2,427.31 km) |
| Boussu to Siverek | 1,943.65 mi (3,128.01 km) |
| Boussu to Sivrice | 1,913.96 mi (3,080.21 km) |
| Boussu to Sivrihisar | 1,541.44 mi (2,480.71 km) |
| Boussu to Sogut | 1,460.57 mi (2,350.57 km) |
| Boussu to Sogutlu | 1,436.30 mi (2,311.51 km) |
| Boussu to Soke | 1,452.63 mi (2,337.79 km) |
| Boussu to Solhan | 1,967.83 mi (3,166.92 km) |
| Boussu to Soma | 1,392.46 mi (2,240.96 km) |
| Boussu to Sorgun | 1,680.47 mi (2,704.46 km) |
| Boussu to Suhut | 1,541.14 mi (2,480.22 km) |
