| Boussu to Navodari | 1,228.55 mi (1,977.15 km) |
| Boussu to Negresti-Oas | 901.73 mi (1,451.19 km) |
| Boussu to Nehoiu | 1,095.25 mi (1,762.63 km) |
| Boussu to Ocna Mures | 958.24 mi (1,542.14 km) |
| Boussu to Odobesti | 1,115.85 mi (1,795.78 km) |
| Boussu to Odorheiu Secuiesc | 1,023.14 mi (1,646.59 km) |
| Boussu to Oltenita | 1,151.47 mi (1,853.11 km) |
| Boussu to Onesti | 1,088.77 mi (1,752.21 km) |
| Boussu to Oradea | 855.26 mi (1,376.41 km) |
| Boussu to Orastie | 945.70 mi (1,521.96 km) |
| Boussu to Oravita | 907.97 mi (1,461.23 km) |
| Boussu to Orsova | 949.00 mi (1,527.28 km) |
| Boussu to Otelu Rosu | 919.97 mi (1,480.54 km) |
| Boussu to Otopeni | 1,111.23 mi (1,788.34 km) |
| Boussu to Ovidiu | 1,227.95 mi (1,976.20 km) |
