| Houghton Regis to Suhut | 1,752.14 mi (2,819.79 km) |
| Houghton Regis to Sulakyurt | 1,809.66 mi (2,912.36 km) |
| Houghton Regis to Sultanbeyli | 1,591.30 mi (2,560.95 km) |
| Houghton Regis to Sultandagi | 1,779.73 mi (2,864.21 km) |
| Houghton Regis to Sultanhani | 1,886.77 mi (3,036.46 km) |
| Houghton Regis to Sultanhisar | 1,687.75 mi (2,716.16 km) |
| Houghton Regis to Suluova | 1,862.10 mi (2,996.76 km) |
| Houghton Regis to Sumbas | 2,025.42 mi (3,259.60 km) |
| Houghton Regis to Sungurlu | 1,836.94 mi (2,956.27 km) |
| Houghton Regis to Surmene | 2,047.32 mi (3,294.85 km) |
| Houghton Regis to Suruc | 2,145.71 mi (3,453.18 km) |
| Houghton Regis to Susehri | 1,992.56 mi (3,206.72 km) |
| Houghton Regis to Susurluk | 1,593.19 mi (2,563.99 km) |
| Houghton Regis to Susuz | 2,181.21 mi (3,510.32 km) |
| Houghton Regis to Sutculer | 1,818.13 mi (2,925.99 km) |
