| Hemel Hempstead to Nuth | 280.14 mi (450.84 km) |
| Hemel Hempstead to Oegstgeest | 212.17 mi (341.45 km) |
| Hemel Hempstead to Oirschot | 248.00 mi (399.12 km) |
| Hemel Hempstead to Oisterwijk | 243.16 mi (391.33 km) |
| Hemel Hempstead to Oldebroek | 274.49 mi (441.74 km) |
| Hemel Hempstead to Oldenzaal | 316.91 mi (510.01 km) |
| Hemel Hempstead to Ommen | 296.64 mi (477.40 km) |
| Hemel Hempstead to Oosterend | 288.77 mi (464.73 km) |
| Hemel Hempstead to Oosterhout | 228.16 mi (367.19 km) |
| Hemel Hempstead to Oosterwolde | 297.60 mi (478.95 km) |
| Hemel Hempstead to Oostzaan | 231.97 mi (373.32 km) |
| Hemel Hempstead to Opmeer | 238.45 mi (383.74 km) |
| Hemel Hempstead to Oss | 255.92 mi (411.87 km) |
| Hemel Hempstead to Oud-Beijerland | 208.13 mi (334.95 km) |
| Hemel Hempstead to Oudenbosch | 214.21 mi (344.74 km) |
