| Southborough to Suhut | 1,703.15 mi (2,740.95 km) |
| Southborough to Sulakyurt | 1,765.25 mi (2,840.89 km) |
| Southborough to Sultanbeyli | 1,544.40 mi (2,485.47 km) |
| Southborough to Sultandagi | 1,731.29 mi (2,786.25 km) |
| Southborough to Sultanhani | 1,839.82 mi (2,960.90 km) |
| Southborough to Sultanhisar | 1,636.15 mi (2,633.13 km) |
| Southborough to Suluova | 1,820.15 mi (2,929.24 km) |
| Southborough to Sumbas | 1,979.48 mi (3,185.66 km) |
| Southborough to Sungurlu | 1,793.06 mi (2,885.65 km) |
| Southborough to Surmene | 2,008.87 mi (3,232.97 km) |
| Southborough to Suruc | 2,101.06 mi (3,381.34 km) |
| Southborough to Susehri | 1,951.57 mi (3,140.74 km) |
| Southborough to Susurluk | 1,543.94 mi (2,484.74 km) |
| Southborough to Susuz | 2,144.79 mi (3,451.70 km) |
| Southborough to Sutculer | 1,768.33 mi (2,845.85 km) |
