| Buckingham to Octeville | 166.11 mi (267.33 km) |
| Buckingham to Oignies | 201.84 mi (324.83 km) |
| Buckingham to Oissel | 204.62 mi (329.31 km) |
| Buckingham to Olivet | 312.91 mi (503.59 km) |
| Buckingham to Ollioules | 689.09 mi (1,108.99 km) |
| Buckingham to Olonne-sur-Mer | 378.83 mi (609.67 km) |
| Buckingham to Oloron-Sainte-Marie | 608.33 mi (979.01 km) |
| Buckingham to Onet Village | 552.16 mi (888.61 km) |
| Buckingham to Onnaing | 227.39 mi (365.95 km) |
| Buckingham to Orange | 604.76 mi (973.26 km) |
| Buckingham to Orchies | 210.96 mi (339.51 km) |
| Buckingham to Orleans | 310.62 mi (499.89 km) |
| Buckingham to Orly | 269.43 mi (433.61 km) |
| Buckingham to Ormesson-sur-Marne | 270.61 mi (435.50 km) |
| Buckingham to Orsay | 267.28 mi (430.14 km) |
