| Gurnee to Noventa Vicentina | 4,618.03 mi (7,432.00 km) |
| Gurnee to Novi di Modena | 4,609.94 mi (7,418.98 km) |
| Gurnee to Novi Ligure | 4,532.54 mi (7,294.42 km) |
| Gurnee to Nuoro | 4,740.43 mi (7,628.99 km) |
| Gurnee to Occhiobello | 4,635.14 mi (7,459.54 km) |
| Gurnee to Oderzo | 4,633.71 mi (7,457.24 km) |
| Gurnee to Oggiono | 4,512.79 mi (7,262.64 km) |
| Gurnee to Olbia | 4,721.78 mi (7,598.96 km) |
| Gurnee to Oleggio | 4,492.30 mi (7,229.65 km) |
| Gurnee to Olgiate Comasco | 4,497.88 mi (7,238.63 km) |
| Gurnee to Olgiate Olona | 4,500.72 mi (7,243.21 km) |
| Gurnee to Omegna | 4,472.20 mi (7,197.31 km) |
| Gurnee to Opera | 4,523.95 mi (7,280.59 km) |
| Gurnee to Oppeano | 4,603.83 mi (7,409.14 km) |
| Gurnee to Orbassano | 4,472.99 mi (7,198.59 km) |
