| Huercal-Overa to Noventa Vicentina | 884.59 mi (1,423.62 km) |
| Huercal-Overa to Novi di Modena | 844.01 mi (1,358.31 km) |
| Huercal-Overa to Novi Ligure | 754.75 mi (1,214.66 km) |
| Huercal-Overa to Nuoro | 638.68 mi (1,027.85 km) |
| Huercal-Overa to Occhiobello | 873.08 mi (1,405.08 km) |
| Huercal-Overa to Oderzo | 942.27 mi (1,516.44 km) |
| Huercal-Overa to Oggiono | 821.19 mi (1,321.58 km) |
| Huercal-Overa to Olbia | 658.82 mi (1,060.27 km) |
| Huercal-Overa to Oleggio | 786.94 mi (1,266.46 km) |
| Huercal-Overa to Olgiate Comasco | 807.37 mi (1,299.33 km) |
| Huercal-Overa to Olgiate Olona | 797.45 mi (1,283.37 km) |
| Huercal-Overa to Omegna | 792.18 mi (1,274.89 km) |
| Huercal-Overa to Opera | 798.36 mi (1,284.83 km) |
| Huercal-Overa to Oppeano | 871.11 mi (1,401.91 km) |
| Huercal-Overa to Orbassano | 720.06 mi (1,158.82 km) |
