| Portage to Noventa Vicentina | 4,534.36 mi (7,297.35 km) |
| Portage to Novi di Modena | 4,525.32 mi (7,282.79 km) |
| Portage to Novi Ligure | 4,446.30 mi (7,155.63 km) |
| Portage to Nuoro | 4,649.02 mi (7,481.88 km) |
| Portage to Occhiobello | 4,551.03 mi (7,324.18 km) |
| Portage to Oderzo | 4,551.39 mi (7,324.75 km) |
| Portage to Oggiono | 4,428.30 mi (7,126.66 km) |
| Portage to Olbia | 4,631.19 mi (7,453.19 km) |
| Portage to Oleggio | 4,407.08 mi (7,092.50 km) |
| Portage to Olgiate Comasco | 4,413.12 mi (7,102.24 km) |
| Portage to Olgiate Olona | 4,415.71 mi (7,106.40 km) |
| Portage to Omegna | 4,387.20 mi (7,060.52 km) |
| Portage to Opera | 4,438.83 mi (7,143.60 km) |
| Portage to Oppeano | 4,519.94 mi (7,274.14 km) |
| Portage to Orbassano | 4,386.25 mi (7,058.99 km) |
