| Gretz-Armainvilliers to Novi di Modena | 468.41 mi (753.83 km) |
| Gretz-Armainvilliers to Novi Ligure | 396.96 mi (638.85 km) |
| Gretz-Armainvilliers to Nuoro | 666.08 mi (1,071.95 km) |
| Gretz-Armainvilliers to Occhiobello | 494.03 mi (795.06 km) |
| Gretz-Armainvilliers to Oderzo | 500.74 mi (805.86 km) |
| Gretz-Armainvilliers to Oggiono | 371.27 mi (597.50 km) |
| Gretz-Armainvilliers to Olbia | 633.59 mi (1,019.67 km) |
| Gretz-Armainvilliers to Oleggio | 351.79 mi (566.15 km) |
| Gretz-Armainvilliers to Olgiate Comasco | 356.42 mi (573.61 km) |
| Gretz-Armainvilliers to Olgiate Olona | 359.64 mi (578.79 km) |
| Gretz-Armainvilliers to Omegna | 331.15 mi (532.93 km) |
| Gretz-Armainvilliers to Opera | 383.07 mi (616.50 km) |
| Gretz-Armainvilliers to Oppeano | 463.20 mi (745.44 km) |
| Gretz-Armainvilliers to Orbassano | 343.39 mi (552.63 km) |
| Gretz-Armainvilliers to Orbetello | 597.30 mi (961.26 km) |
