| Frosinone to Octeville | 908.16 mi (1,461.54 km) |
| Frosinone to Oignies | 785.44 mi (1,264.04 km) |
| Frosinone to Oissel | 795.86 mi (1,280.82 km) |
| Frosinone to Olivet | 706.56 mi (1,137.09 km) |
| Frosinone to Ollioules | 396.64 mi (638.33 km) |
| Frosinone to Olonne-sur-Mer | 821.70 mi (1,322.39 km) |
| Frosinone to Oloron-Sainte-Marie | 719.20 mi (1,157.44 km) |
| Frosinone to Onet Village | 574.87 mi (925.16 km) |
| Frosinone to Onnaing | 763.41 mi (1,228.59 km) |
| Frosinone to Orange | 465.43 mi (749.03 km) |
| Frosinone to Orchies | 778.26 mi (1,252.49 km) |
| Frosinone to Orleans | 707.70 mi (1,138.93 km) |
| Frosinone to Orly | 723.98 mi (1,165.13 km) |
| Frosinone to Ormesson-sur-Marne | 720.64 mi (1,159.77 km) |
| Frosinone to Orsay | 729.37 mi (1,173.81 km) |
