| Herne to Navodari | 1,103.66 mi (1,776.17 km) |
| Herne to Negresti-Oas | 765.57 mi (1,232.06 km) |
| Herne to Nehoiu | 970.02 mi (1,561.10 km) |
| Herne to Ocna Mures | 832.32 mi (1,339.49 km) |
| Herne to Odobesti | 986.09 mi (1,586.95 km) |
| Herne to Odorheiu Secuiesc | 894.01 mi (1,438.77 km) |
| Herne to Oltenita | 1,033.48 mi (1,663.22 km) |
| Herne to Onesti | 956.60 mi (1,539.50 km) |
| Herne to Oradea | 729.34 mi (1,173.76 km) |
| Herne to Orastie | 825.99 mi (1,329.30 km) |
| Herne to Oravita | 800.66 mi (1,288.53 km) |
| Herne to Orsova | 841.36 mi (1,354.04 km) |
| Herne to Otelu Rosu | 805.92 mi (1,297.00 km) |
| Herne to Otopeni | 991.95 mi (1,596.38 km) |
| Herne to Ovidiu | 1,103.49 mi (1,775.90 km) |
