| Harelbeke to Navodari | 1,254.84 mi (2,019.47 km) |
| Harelbeke to Negresti-Oas | 925.07 mi (1,488.76 km) |
| Harelbeke to Nehoiu | 1,121.35 mi (1,804.64 km) |
| Harelbeke to Ocna Mures | 984.04 mi (1,583.67 km) |
| Harelbeke to Odobesti | 1,140.98 mi (1,836.23 km) |
| Harelbeke to Odorheiu Secuiesc | 1,048.32 mi (1,687.11 km) |
| Harelbeke to Oltenita | 1,179.05 mi (1,897.49 km) |
| Harelbeke to Onesti | 1,113.32 mi (1,791.71 km) |
| Harelbeke to Oradea | 880.91 mi (1,417.69 km) |
| Harelbeke to Orastie | 972.73 mi (1,565.46 km) |
| Harelbeke to Oravita | 937.06 mi (1,508.05 km) |
| Harelbeke to Orsova | 978.10 mi (1,574.10 km) |
| Harelbeke to Otelu Rosu | 947.98 mi (1,525.62 km) |
| Harelbeke to Otopeni | 1,138.52 mi (1,832.28 km) |
| Harelbeke to Ovidiu | 1,254.33 mi (2,018.65 km) |
