| Horn Lake to Noventa Vicentina | 5,048.30 mi (8,124.46 km) |
| Horn Lake to Novi di Modena | 5,036.96 mi (8,106.21 km) |
| Horn Lake to Novi Ligure | 4,954.03 mi (7,972.74 km) |
| Horn Lake to Nuoro | 5,141.17 mi (8,273.92 km) |
| Horn Lake to Occhiobello | 5,063.87 mi (8,149.51 km) |
| Horn Lake to Oderzo | 5,068.39 mi (8,156.78 km) |
| Horn Lake to Oggiono | 4,940.49 mi (7,950.95 km) |
| Horn Lake to Olbia | 5,126.01 mi (8,249.52 km) |
| Horn Lake to Oleggio | 4,917.52 mi (7,913.98 km) |
| Horn Lake to Olgiate Comasco | 4,924.72 mi (7,925.57 km) |
| Horn Lake to Olgiate Olona | 4,926.66 mi (7,928.69 km) |
| Horn Lake to Omegna | 4,898.26 mi (7,882.99 km) |
| Horn Lake to Opera | 4,949.44 mi (7,965.35 km) |
| Horn Lake to Oppeano | 5,033.38 mi (8,100.45 km) |
| Horn Lake to Orbassano | 4,892.82 mi (7,874.23 km) |
