| Nenagh to Novi di Modena | 1,023.01 mi (1,646.38 km) |
| Nenagh to Novi Ligure | 950.49 mi (1,529.66 km) |
| Nenagh to Nuoro | 1,195.65 mi (1,924.21 km) |
| Nenagh to Occhiobello | 1,047.66 mi (1,686.04 km) |
| Nenagh to Oderzo | 1,047.30 mi (1,685.47 km) |
| Nenagh to Oggiono | 925.79 mi (1,489.91 km) |
| Nenagh to Olbia | 1,168.59 mi (1,880.67 km) |
| Nenagh to Oleggio | 906.84 mi (1,459.42 km) |
| Nenagh to Olgiate Comasco | 911.32 mi (1,466.63 km) |
| Nenagh to Olgiate Olona | 914.71 mi (1,472.08 km) |
| Nenagh to Omegna | 886.22 mi (1,426.23 km) |
| Nenagh to Opera | 938.15 mi (1,509.80 km) |
| Nenagh to Oppeano | 1,016.23 mi (1,635.47 km) |
| Nenagh to Orbassano | 893.86 mi (1,438.53 km) |
| Nenagh to Orbetello | 1,149.08 mi (1,849.26 km) |
