| Hillsborough to Nasaud | 4,606.49 mi (7,413.43 km) |
| Hillsborough to Navodari | 4,891.25 mi (7,871.71 km) |
| Hillsborough to Negresti-Oas | 4,545.78 mi (7,315.73 km) |
| Hillsborough to Nehoiu | 4,758.16 mi (7,657.51 km) |
| Hillsborough to Ocna Mures | 4,620.90 mi (7,436.62 km) |
| Hillsborough to Odobesti | 4,770.40 mi (7,677.21 km) |
| Hillsborough to Odorheiu Secuiesc | 4,679.88 mi (7,531.55 km) |
| Hillsborough to Oltenita | 4,823.95 mi (7,763.40 km) |
| Hillsborough to Onesti | 4,738.55 mi (7,625.96 km) |
| Hillsborough to Oradea | 4,518.53 mi (7,271.87 km) |
| Hillsborough to Orastie | 4,616.46 mi (7,429.48 km) |
| Hillsborough to Oravita | 4,587.96 mi (7,383.61 km) |
| Hillsborough to Orsova | 4,628.96 mi (7,449.59 km) |
| Hillsborough to Otelu Rosu | 4,595.95 mi (7,396.47 km) |
| Hillsborough to Otopeni | 4,782.29 mi (7,696.35 km) |
