| Romilly-sur-Seine to Novi di Modena | 421.83 mi (678.88 km) |
| Romilly-sur-Seine to Novi Ligure | 353.35 mi (568.66 km) |
| Romilly-sur-Seine to Nuoro | 630.04 mi (1,013.95 km) |
| Romilly-sur-Seine to Occhiobello | 446.97 mi (719.33 km) |
| Romilly-sur-Seine to Oderzo | 452.85 mi (728.78 km) |
| Romilly-sur-Seine to Oggiono | 324.62 mi (522.42 km) |
| Romilly-sur-Seine to Olbia | 596.26 mi (959.58 km) |
| Romilly-sur-Seine to Oleggio | 306.36 mi (493.04 km) |
| Romilly-sur-Seine to Olgiate Comasco | 310.16 mi (499.15 km) |
| Romilly-sur-Seine to Olgiate Olona | 313.79 mi (505.00 km) |
| Romilly-sur-Seine to Omegna | 285.38 mi (459.27 km) |
| Romilly-sur-Seine to Opera | 337.33 mi (542.88 km) |
| Romilly-sur-Seine to Oppeano | 415.95 mi (669.41 km) |
| Romilly-sur-Seine to Orbassano | 302.05 mi (486.11 km) |
| Romilly-sur-Seine to Orbetello | 554.25 mi (891.98 km) |
