| Frosinone to Novi di Modena | 256.72 mi (413.15 km) |
| Frosinone to Novi Ligure | 315.35 mi (507.50 km) |
| Frosinone to Nuoro | 228.40 mi (367.57 km) |
| Frosinone to Occhiobello | 243.98 mi (392.65 km) |
| Frosinone to Oderzo | 289.74 mi (466.29 km) |
| Frosinone to Oggiono | 349.37 mi (562.25 km) |
| Frosinone to Olbia | 205.94 mi (331.43 km) |
| Frosinone to Oleggio | 361.50 mi (581.78 km) |
| Frosinone to Olgiate Comasco | 360.63 mi (580.38 km) |
| Frosinone to Olgiate Olona | 355.23 mi (571.69 km) |
| Frosinone to Omegna | 383.08 mi (616.51 km) |
| Frosinone to Opera | 331.62 mi (533.68 km) |
| Frosinone to Oppeano | 275.63 mi (443.59 km) |
| Frosinone to Orbassano | 373.64 mi (601.32 km) |
| Frosinone to Orbetello | 123.01 mi (197.97 km) |
