| North Hykeham to Nuth | 316.25 mi (508.95 km) |
| North Hykeham to Oegstgeest | 222.63 mi (358.29 km) |
| North Hykeham to Oirschot | 274.28 mi (441.42 km) |
| North Hykeham to Oisterwijk | 267.84 mi (431.05 km) |
| North Hykeham to Oldebroek | 275.50 mi (443.37 km) |
| North Hykeham to Oldenzaal | 320.02 mi (515.03 km) |
| North Hykeham to Ommen | 295.74 mi (475.94 km) |
| North Hykeham to Oosterend | 276.26 mi (444.59 km) |
| North Hykeham to Oosterhout | 252.84 mi (406.91 km) |
| North Hykeham to Oosterwolde | 285.66 mi (459.72 km) |
| North Hykeham to Oostzaan | 234.23 mi (376.96 km) |
| North Hykeham to Opmeer | 232.91 mi (374.84 km) |
| North Hykeham to Oss | 274.80 mi (442.25 km) |
| North Hykeham to Oud-Beijerland | 229.99 mi (370.13 km) |
| North Hykeham to Oudenbosch | 241.98 mi (389.43 km) |
