| Geel to Oignies | 99.96 mi (160.87 km) |
| Geel to Oissel | 213.76 mi (344.01 km) |
| Geel to Olivet | 267.16 mi (429.96 km) |
| Geel to Ollioules | 556.05 mi (894.87 km) |
| Geel to Olonne-sur-Mer | 443.69 mi (714.05 km) |
| Geel to Oloron-Sainte-Marie | 610.10 mi (981.87 km) |
| Geel to Onet Village | 482.95 mi (777.23 km) |
| Geel to Onnaing | 81.53 mi (131.21 km) |
| Geel to Orange | 485.70 mi (781.65 km) |
| Geel to Orchies | 90.33 mi (145.37 km) |
| Geel to Orleans | 264.66 mi (425.94 km) |
| Geel to Orly | 203.58 mi (327.62 km) |
| Geel to Ormesson-sur-Marne | 197.53 mi (317.89 km) |
| Geel to Orsay | 211.48 mi (340.34 km) |
| Geel to Orthez | 594.96 mi (957.50 km) |
