| Killingworth to Nasaud | 1,236.27 mi (1,989.58 km) |
| Killingworth to Navodari | 1,521.59 mi (2,448.77 km) |
| Killingworth to Negresti-Oas | 1,175.56 mi (1,891.89 km) |
| Killingworth to Nehoiu | 1,388.92 mi (2,235.25 km) |
| Killingworth to Ocna Mures | 1,252.21 mi (2,015.24 km) |
| Killingworth to Odobesti | 1,400.22 mi (2,253.44 km) |
| Killingworth to Odorheiu Secuiesc | 1,310.00 mi (2,108.23 km) |
| Killingworth to Oltenita | 1,457.67 mi (2,345.89 km) |
| Killingworth to Onesti | 1,368.33 mi (2,202.12 km) |
| Killingworth to Oradea | 1,150.66 mi (1,851.81 km) |
| Killingworth to Orastie | 1,250.78 mi (2,012.93 km) |
| Killingworth to Oravita | 1,231.91 mi (1,982.56 km) |
| Killingworth to Orsova | 1,272.27 mi (2,047.52 km) |
| Killingworth to Otelu Rosu | 1,234.25 mi (1,986.33 km) |
| Killingworth to Otopeni | 1,415.53 mi (2,278.08 km) |
