| Houghton Regis to Nuth | 284.35 mi (457.62 km) |
| Houghton Regis to Oegstgeest | 212.95 mi (342.71 km) |
| Houghton Regis to Oirschot | 250.91 mi (403.79 km) |
| Houghton Regis to Oisterwijk | 245.85 mi (395.65 km) |
| Houghton Regis to Oldebroek | 274.72 mi (442.12 km) |
| Houghton Regis to Oldenzaal | 317.61 mi (511.14 km) |
| Houghton Regis to Ommen | 296.80 mi (477.65 km) |
| Houghton Regis to Oosterend | 287.62 mi (462.88 km) |
| Houghton Regis to Oosterhout | 230.73 mi (371.33 km) |
| Houghton Regis to Oosterwolde | 296.56 mi (477.27 km) |
| Houghton Regis to Oostzaan | 232.02 mi (373.40 km) |
| Houghton Regis to Opmeer | 237.69 mi (382.53 km) |
| Houghton Regis to Oss | 258.03 mi (415.27 km) |
| Houghton Regis to Oud-Beijerland | 210.19 mi (338.26 km) |
| Houghton Regis to Oudenbosch | 217.02 mi (349.26 km) |
