| Grootegast to Octeville | 421.68 mi (678.64 km) |
| Grootegast to Oignies | 236.08 mi (379.93 km) |
| Grootegast to Oissel | 349.14 mi (561.88 km) |
| Grootegast to Olivet | 416.73 mi (670.66 km) |
| Grootegast to Ollioules | 696.56 mi (1,121.01 km) |
| Grootegast to Olonne-sur-Mer | 583.82 mi (939.57 km) |
| Grootegast to Oloron-Sainte-Marie | 760.86 mi (1,224.49 km) |
| Grootegast to Onet Village | 633.97 mi (1,020.28 km) |
| Grootegast to Onnaing | 226.60 mi (364.68 km) |
| Grootegast to Orange | 630.81 mi (1,015.19 km) |
| Grootegast to Orchies | 229.56 mi (369.45 km) |
| Grootegast to Orleans | 414.16 mi (666.53 km) |
| Grootegast to Orly | 352.22 mi (566.85 km) |
| Grootegast to Ormesson-sur-Marne | 346.64 mi (557.87 km) |
| Grootegast to Orsay | 359.37 mi (578.35 km) |
