| Horndean to Noventa Vicentina | 695.41 mi (1,119.15 km) |
| Horndean to Novi di Modena | 689.04 mi (1,108.91 km) |
| Horndean to Novi Ligure | 620.83 mi (999.13 km) |
| Horndean to Nuoro | 884.31 mi (1,423.16 km) |
| Horndean to Occhiobello | 713.02 mi (1,147.50 km) |
| Horndean to Oderzo | 712.20 mi (1,146.17 km) |
| Horndean to Oggiono | 591.85 mi (952.50 km) |
| Horndean to Olbia | 853.57 mi (1,373.68 km) |
| Horndean to Oleggio | 574.53 mi (924.61 km) |
| Horndean to Olgiate Comasco | 577.91 mi (930.05 km) |
| Horndean to Olgiate Olona | 581.83 mi (936.37 km) |
| Horndean to Omegna | 553.47 mi (890.72 km) |
| Horndean to Opera | 605.41 mi (974.31 km) |
| Horndean to Oppeano | 681.42 mi (1,096.64 km) |
| Horndean to Orbassano | 567.10 mi (912.65 km) |
