| Billings to Nasaud | 5,404.02 mi (8,696.93 km) |
| Billings to Navodari | 5,682.49 mi (9,145.08 km) |
| Billings to Negresti-Oas | 5,345.48 mi (8,602.72 km) |
| Billings to Nehoiu | 5,564.93 mi (8,955.90 km) |
| Billings to Ocna Mures | 5,443.10 mi (8,759.83 km) |
| Billings to Odobesti | 5,558.50 mi (8,945.53 km) |
| Billings to Odorheiu Secuiesc | 5,483.23 mi (8,824.41 km) |
| Billings to Oltenita | 5,648.89 mi (9,091.02 km) |
| Billings to Onesti | 5,521.90 mi (8,886.65 km) |
| Billings to Oradea | 5,354.22 mi (8,616.78 km) |
| Billings to Orastie | 5,458.13 mi (8,784.02 km) |
| Billings to Oravita | 5,466.00 mi (8,796.68 km) |
| Billings to Orsova | 5,503.08 mi (8,856.36 km) |
| Billings to Otelu Rosu | 5,455.69 mi (8,780.08 km) |
| Billings to Otopeni | 5,607.17 mi (9,023.87 km) |
