| Pompei to Octeville | 993.51 mi (1,598.90 km) |
| Pompei to Oignies | 869.86 mi (1,399.90 km) |
| Pompei to Oissel | 881.29 mi (1,418.30 km) |
| Pompei to Olivet | 791.82 mi (1,274.32 km) |
| Pompei to Ollioules | 474.07 mi (762.94 km) |
| Pompei to Olonne-sur-Mer | 904.21 mi (1,455.19 km) |
| Pompei to Oloron-Sainte-Marie | 792.99 mi (1,276.20 km) |
| Pompei to Onet Village | 654.65 mi (1,053.55 km) |
| Pompei to Onnaing | 847.56 mi (1,364.01 km) |
| Pompei to Orange | 546.26 mi (879.12 km) |
| Pompei to Orchies | 862.55 mi (1,388.13 km) |
| Pompei to Orleans | 792.99 mi (1,276.19 km) |
| Pompei to Orly | 809.40 mi (1,302.60 km) |
| Pompei to Ormesson-sur-Marne | 806.05 mi (1,297.21 km) |
| Pompei to Orsay | 814.81 mi (1,311.30 km) |
