| Belm to Navodari | 1,085.14 mi (1,746.36 km) |
| Belm to Negresti-Oas | 741.93 mi (1,194.01 km) |
| Belm to Nehoiu | 951.97 mi (1,532.04 km) |
| Belm to Ocna Mures | 814.76 mi (1,311.24 km) |
| Belm to Odobesti | 965.18 mi (1,553.30 km) |
| Belm to Odorheiu Secuiesc | 874.03 mi (1,406.61 km) |
| Belm to Oltenita | 1,019.28 mi (1,640.38 km) |
| Belm to Onesti | 934.33 mi (1,503.66 km) |
| Belm to Oradea | 712.68 mi (1,146.95 km) |
| Belm to Orastie | 812.19 mi (1,307.10 km) |
| Belm to Oravita | 794.02 mi (1,277.85 km) |
| Belm to Orsova | 834.18 mi (1,342.48 km) |
| Belm to Otelu Rosu | 795.54 mi (1,280.30 km) |
| Belm to Otopeni | 977.25 mi (1,572.73 km) |
| Belm to Ovidiu | 1,085.22 mi (1,746.50 km) |
