| Northampton to Nasaud | 1,173.03 mi (1,887.80 km) |
| Northampton to Navodari | 1,450.18 mi (2,333.84 km) |
| Northampton to Negresti-Oas | 1,114.25 mi (1,793.21 km) |
| Northampton to Nehoiu | 1,316.50 mi (2,118.70 km) |
| Northampton to Ocna Mures | 1,178.82 mi (1,897.13 km) |
| Northampton to Odobesti | 1,333.87 mi (2,146.66 km) |
| Northampton to Odorheiu Secuiesc | 1,241.54 mi (1,998.07 km) |
| Northampton to Oltenita | 1,377.15 mi (2,216.32 km) |
| Northampton to Onesti | 1,304.86 mi (2,099.98 km) |
| Northampton to Oradea | 1,075.63 mi (1,731.06 km) |
| Northampton to Orastie | 1,170.07 mi (1,883.04 km) |
| Northampton to Oravita | 1,138.04 mi (1,831.50 km) |
| Northampton to Orsova | 1,179.05 mi (1,897.50 km) |
| Northampton to Otelu Rosu | 1,147.19 mi (1,846.22 km) |
| Northampton to Otopeni | 1,336.14 mi (2,150.31 km) |
