| Billdal to Nasaud | 881.67 mi (1,418.92 km) |
| Billdal to Navodari | 1,162.50 mi (1,870.87 km) |
| Billdal to Negresti-Oas | 823.25 mi (1,324.90 km) |
| Billdal to Nehoiu | 1,042.66 mi (1,678.00 km) |
| Billdal to Ocna Mures | 922.08 mi (1,483.95 km) |
| Billdal to Odobesti | 1,037.72 mi (1,670.05 km) |
| Billdal to Odorheiu Secuiesc | 960.90 mi (1,546.41 km) |
| Billdal to Oltenita | 1,126.66 mi (1,813.18 km) |
| Billdal to Onesti | 1,001.44 mi (1,611.66 km) |
| Billdal to Oradea | 837.86 mi (1,348.40 km) |
| Billdal to Orastie | 940.55 mi (1,513.66 km) |
| Billdal to Oravita | 961.33 mi (1,547.11 km) |
| Billdal to Orsova | 994.81 mi (1,600.99 km) |
| Billdal to Otelu Rosu | 943.75 mi (1,518.81 km) |
| Billdal to Otopeni | 1,085.09 mi (1,746.28 km) |
