| Huercal-Overa to Nasaud | 1,499.19 mi (2,412.71 km) |
| Huercal-Overa to Navodari | 1,655.93 mi (2,664.97 km) |
| Huercal-Overa to Negresti-Oas | 1,468.94 mi (2,364.03 km) |
| Huercal-Overa to Nehoiu | 1,554.53 mi (2,501.78 km) |
| Huercal-Overa to Ocna Mures | 1,456.63 mi (2,344.22 km) |
| Huercal-Overa to Odobesti | 1,596.10 mi (2,568.67 km) |
| Huercal-Overa to Odorheiu Secuiesc | 1,521.66 mi (2,448.87 km) |
| Huercal-Overa to Oltenita | 1,556.81 mi (2,505.44 km) |
| Huercal-Overa to Onesti | 1,588.98 mi (2,557.22 km) |
| Huercal-Overa to Oradea | 1,384.02 mi (2,227.36 km) |
| Huercal-Overa to Orastie | 1,416.09 mi (2,278.98 km) |
| Huercal-Overa to Oravita | 1,330.50 mi (2,141.24 km) |
| Huercal-Overa to Orsova | 1,358.86 mi (2,186.87 km) |
| Huercal-Overa to Otelu Rosu | 1,370.56 mi (2,205.70 km) |
| Huercal-Overa to Otopeni | 1,533.66 mi (2,468.19 km) |
