| Mariano Comense to Novi di Modena | 100.37 mi (161.54 km) |
| Mariano Comense to Novi Ligure | 67.82 mi (109.15 km) |
| Mariano Comense to Nuoro | 372.03 mi (598.72 km) |
| Mariano Comense to Occhiobello | 128.32 mi (206.51 km) |
| Mariano Comense to Oderzo | 159.67 mi (256.97 km) |
| Mariano Comense to Oggiono | 9.89 mi (15.91 km) |
| Mariano Comense to Olbia | 330.88 mi (532.49 km) |
| Mariano Comense to Oleggio | 27.45 mi (44.17 km) |
| Mariano Comense to Olgiate Comasco | 11.93 mi (19.19 km) |
| Mariano Comense to Olgiate Olona | 15.20 mi (24.46 km) |
| Mariano Comense to Omegna | 39.38 mi (63.37 km) |
| Mariano Comense to Opera | 21.94 mi (35.31 km) |
| Mariano Comense to Oppeano | 100.72 mi (162.09 km) |
| Mariano Comense to Orbassano | 93.17 mi (149.94 km) |
| Mariano Comense to Orbetello | 246.76 mi (397.12 km) |
