| Monfalcone to Novi di Modena | 142.34 mi (229.07 km) |
| Monfalcone to Novi Ligure | 241.72 mi (389.01 km) |
| Monfalcone to Nuoro | 434.00 mi (698.46 km) |
| Monfalcone to Occhiobello | 112.53 mi (181.10 km) |
| Monfalcone to Oderzo | 50.15 mi (80.70 km) |
| Monfalcone to Oggiono | 201.52 mi (324.31 km) |
| Monfalcone to Olbia | 393.44 mi (633.18 km) |
| Monfalcone to Oleggio | 236.82 mi (381.12 km) |
| Monfalcone to Olgiate Comasco | 219.98 mi (354.02 km) |
| Monfalcone to Olgiate Olona | 224.59 mi (361.44 km) |
| Monfalcone to Omegna | 246.78 mi (397.15 km) |
| Monfalcone to Opera | 210.65 mi (339.01 km) |
| Monfalcone to Oppeano | 118.83 mi (191.24 km) |
| Monfalcone to Orbassano | 295.93 mi (476.25 km) |
| Monfalcone to Orbetello | 259.13 mi (417.04 km) |
