| Houghton Regis to Nyon | 488.23 mi (785.73 km) |
| Houghton Regis to Oberriet | 551.11 mi (886.92 km) |
| Houghton Regis to Obersiggenthal | 497.83 mi (801.18 km) |
| Houghton Regis to Oberwil | 471.04 mi (758.06 km) |
| Houghton Regis to Oberwingert | 513.46 mi (826.33 km) |
| Houghton Regis to Oftringen | 492.69 mi (792.91 km) |
| Houghton Regis to Olten | 490.55 mi (789.46 km) |
| Houghton Regis to Onex | 495.80 mi (797.91 km) |
| Houghton Regis to Opfikon | 509.96 mi (820.70 km) |
| Houghton Regis to Ostermundigen | 496.07 mi (798.34 km) |
| Houghton Regis to Payerne | 485.51 mi (781.35 km) |
| Houghton Regis to Pfaffikon | 520.65 mi (837.90 km) |
| Houghton Regis to Plan-les-Ouates | 497.19 mi (800.16 km) |
| Houghton Regis to Pratteln | 475.86 mi (765.83 km) |
| Houghton Regis to Prilly | 490.53 mi (789.44 km) |
