| Leiden to Noventa Vicentina | 572.84 mi (921.90 km) |
| Leiden to Novi di Modena | 580.97 mi (934.98 km) |
| Leiden to Novi Ligure | 547.67 mi (881.39 km) |
| Leiden to Nuoro | 849.91 mi (1,367.79 km) |
| Leiden to Occhiobello | 595.48 mi (958.34 km) |
| Leiden to Oderzo | 570.28 mi (917.78 km) |
| Leiden to Oggiono | 492.38 mi (792.41 km) |
| Leiden to Olbia | 812.01 mi (1,306.81 km) |
| Leiden to Oleggio | 490.59 mi (789.53 km) |
| Leiden to Olgiate Comasco | 484.89 mi (780.36 km) |
| Leiden to Olgiate Olona | 492.91 mi (793.26 km) |
| Leiden to Omegna | 468.75 mi (754.38 km) |
| Leiden to Opera | 515.06 mi (828.90 km) |
| Leiden to Oppeano | 563.12 mi (906.25 km) |
| Leiden to Orbassano | 513.33 mi (826.12 km) |
