| Shannon to Novi di Modena | 1,044.33 mi (1,680.69 km) |
| Shannon to Novi Ligure | 970.19 mi (1,561.36 km) |
| Shannon to Nuoro | 1,211.06 mi (1,949.01 km) |
| Shannon to Occhiobello | 1,069.42 mi (1,721.06 km) |
| Shannon to Oderzo | 1,070.45 mi (1,722.72 km) |
| Shannon to Oggiono | 947.14 mi (1,524.28 km) |
| Shannon to Olbia | 1,184.71 mi (1,906.61 km) |
| Shannon to Oleggio | 927.47 mi (1,492.62 km) |
| Shannon to Olgiate Comasco | 932.42 mi (1,500.58 km) |
| Shannon to Olgiate Olona | 935.56 mi (1,505.64 km) |
| Shannon to Omegna | 907.05 mi (1,459.75 km) |
| Shannon to Opera | 958.92 mi (1,543.24 km) |
| Shannon to Oppeano | 1,038.17 mi (1,670.77 km) |
| Shannon to Orbassano | 912.87 mi (1,469.13 km) |
| Shannon to Orbetello | 1,168.05 mi (1,879.79 km) |
