| West Chicago to Noventa Vicentina | 4,650.65 mi (7,484.50 km) |
| West Chicago to Novi di Modena | 4,642.39 mi (7,471.20 km) |
| West Chicago to Novi Ligure | 4,564.69 mi (7,346.16 km) |
| West Chicago to Nuoro | 4,771.52 mi (7,679.02 km) |
| West Chicago to Occhiobello | 4,667.69 mi (7,511.91 km) |
| West Chicago to Oderzo | 4,666.56 mi (7,510.10 km) |
| West Chicago to Oggiono | 4,545.26 mi (7,314.89 km) |
| West Chicago to Olbia | 4,753.05 mi (7,649.29 km) |
| West Chicago to Oleggio | 4,524.64 mi (7,281.70 km) |
| West Chicago to Olgiate Comasco | 4,530.30 mi (7,290.81 km) |
| West Chicago to Olgiate Olona | 4,533.10 mi (7,295.32 km) |
| West Chicago to Omegna | 4,504.58 mi (7,249.42 km) |
| West Chicago to Opera | 4,556.31 mi (7,332.67 km) |
| West Chicago to Oppeano | 4,636.41 mi (7,461.58 km) |
| West Chicago to Orbassano | 4,505.05 mi (7,250.17 km) |
