| Houghton Regis to Sesena | 829.21 mi (1,334.49 km) |
| Houghton Regis to Sestao | 604.77 mi (973.29 km) |
| Houghton Regis to Sevilla | 1,047.53 mi (1,685.83 km) |
| Houghton Regis to Sevilla La Nueva | 815.66 mi (1,312.67 km) |
| Houghton Regis to Silla | 866.59 mi (1,394.65 km) |
| Houghton Regis to Silleda | 730.40 mi (1,175.46 km) |
| Houghton Regis to Sitges | 745.38 mi (1,199.57 km) |
| Houghton Regis to Socuellamos | 878.07 mi (1,413.12 km) |
| Houghton Regis to Soller | 852.62 mi (1,372.16 km) |
| Houghton Regis to Solsona | 691.35 mi (1,112.62 km) |
| Houghton Regis to Son Servera | 868.76 mi (1,398.14 km) |
| Houghton Regis to Sonseca | 858.94 mi (1,382.34 km) |
| Houghton Regis to Sopelana | 599.74 mi (965.18 km) |
| Houghton Regis to Soria | 706.33 mi (1,136.73 km) |
| Houghton Regis to Suances | 607.62 mi (977.87 km) |
