| Hays to Nasaud | 5,550.25 mi (8,932.26 km) |
| Hays to Navodari | 5,837.00 mi (9,393.75 km) |
| Hays to Negresti-Oas | 5,489.59 mi (8,834.64 km) |
| Hays to Nehoiu | 5,710.53 mi (9,190.21 km) |
| Hays to Ocna Mures | 5,579.69 mi (8,979.64 km) |
| Hays to Odobesti | 5,711.84 mi (9,192.32 km) |
| Hays to Odorheiu Secuiesc | 5,628.63 mi (9,058.40 km) |
| Hays to Oltenita | 5,788.41 mi (9,315.55 km) |
| Hays to Onesti | 5,676.50 mi (9,135.45 km) |
| Hays to Oradea | 5,483.25 mi (8,824.43 km) |
| Hays to Orastie | 5,586.70 mi (8,990.93 km) |
| Hays to Oravita | 5,578.98 mi (8,978.50 km) |
| Hays to Orsova | 5,618.50 mi (9,042.10 km) |
| Hays to Otelu Rosu | 5,576.42 mi (8,974.38 km) |
| Hays to Otopeni | 5,745.89 mi (9,247.12 km) |
