| Ardahan to Noventa Vicentina | 1,585.90 mi (2,552.26 km) |
| Ardahan to Novi di Modena | 1,617.37 mi (2,602.90 km) |
| Ardahan to Novi Ligure | 1,721.36 mi (2,770.25 km) |
| Ardahan to Nuoro | 1,737.69 mi (2,796.54 km) |
| Ardahan to Occhiobello | 1,584.04 mi (2,549.26 km) |
| Ardahan to Oderzo | 1,539.63 mi (2,477.79 km) |
| Ardahan to Oggiono | 1,691.05 mi (2,721.49 km) |
| Ardahan to Olbia | 1,720.41 mi (2,768.74 km) |
| Ardahan to Oleggio | 1,725.96 mi (2,777.66 km) |
| Ardahan to Olgiate Comasco | 1,709.52 mi (2,751.20 km) |
| Ardahan to Olgiate Olona | 1,713.81 mi (2,758.11 km) |
| Ardahan to Omegna | 1,736.30 mi (2,794.31 km) |
| Ardahan to Opera | 1,698.23 mi (2,733.03 km) |
| Ardahan to Oppeano | 1,602.90 mi (2,579.61 km) |
| Ardahan to Orbassano | 1,781.24 mi (2,866.63 km) |
