| Helena to Noventa Vicentina | 5,221.98 mi (8,403.97 km) |
| Helena to Novi di Modena | 5,225.36 mi (8,409.41 km) |
| Helena to Novi Ligure | 5,170.20 mi (8,320.63 km) |
| Helena to Nuoro | 5,431.49 mi (8,741.15 km) |
| Helena to Occhiobello | 5,243.53 mi (8,438.64 km) |
| Helena to Oderzo | 5,221.48 mi (8,403.16 km) |
| Helena to Oggiono | 5,130.91 mi (8,257.40 km) |
| Helena to Olbia | 5,403.52 mi (8,696.12 km) |
| Helena to Oleggio | 5,119.75 mi (8,239.44 km) |
| Helena to Olgiate Comasco | 5,119.62 mi (8,239.24 km) |
| Helena to Olgiate Olona | 5,125.35 mi (8,248.45 km) |
| Helena to Omegna | 5,097.89 mi (8,204.26 km) |
| Helena to Opera | 5,148.89 mi (8,286.34 km) |
| Helena to Oppeano | 5,210.97 mi (8,386.24 km) |
| Helena to Orbassano | 5,119.01 mi (8,238.25 km) |
