| Hayden to Nasaud | 5,467.25 mi (8,798.69 km) |
| Hayden to Navodari | 5,736.54 mi (9,232.07 km) |
| Hayden to Negresti-Oas | 5,410.89 mi (8,707.99 km) |
| Hayden to Nehoiu | 5,626.27 mi (9,054.60 km) |
| Hayden to Ocna Mures | 5,511.82 mi (8,870.41 km) |
| Hayden to Odobesti | 5,615.04 mi (9,036.53 km) |
| Hayden to Odorheiu Secuiesc | 5,545.86 mi (8,925.19 km) |
| Hayden to Oltenita | 5,712.85 mi (9,193.94 km) |
| Hayden to Onesti | 5,578.18 mi (8,977.21 km) |
| Hayden to Oradea | 5,428.91 mi (8,736.98 km) |
| Hayden to Orastie | 5,531.62 mi (8,902.29 km) |
| Hayden to Oravita | 5,549.02 mi (8,930.28 km) |
| Hayden to Orsova | 5,584.08 mi (8,986.70 km) |
| Hayden to Otelu Rosu | 5,534.07 mi (8,906.22 km) |
| Hayden to Otopeni | 5,672.21 mi (9,128.54 km) |
