| Boechout to Navodari | 1,209.47 mi (1,946.45 km) |
| Boechout to Negresti-Oas | 876.72 mi (1,410.95 km) |
| Boechout to Nehoiu | 1,075.84 mi (1,731.39 km) |
| Boechout to Ocna Mures | 938.27 mi (1,510.01 km) |
| Boechout to Odobesti | 1,094.31 mi (1,761.13 km) |
| Boechout to Odorheiu Secuiesc | 1,001.78 mi (1,612.20 km) |
| Boechout to Oltenita | 1,135.44 mi (1,827.32 km) |
| Boechout to Onesti | 1,066.03 mi (1,715.61 km) |
| Boechout to Oradea | 835.07 mi (1,343.91 km) |
| Boechout to Orastie | 928.53 mi (1,494.33 km) |
| Boechout to Oravita | 896.05 mi (1,442.06 km) |
| Boechout to Orsova | 937.06 mi (1,508.05 km) |
| Boechout to Otelu Rosu | 905.22 mi (1,456.82 km) |
| Boechout to Otopeni | 1,094.56 mi (1,761.53 km) |
| Boechout to Ovidiu | 1,209.07 mi (1,945.82 km) |
