| Louth to Nasaud | 1,148.96 mi (1,849.06 km) |
| Louth to Navodari | 1,430.66 mi (2,302.43 km) |
| Louth to Negresti-Oas | 1,089.09 mi (1,752.72 km) |
| Louth to Nehoiu | 1,297.18 mi (2,087.61 km) |
| Louth to Ocna Mures | 1,159.61 mi (1,866.21 km) |
| Louth to Odobesti | 1,311.69 mi (2,110.97 km) |
| Louth to Odorheiu Secuiesc | 1,220.13 mi (1,963.61 km) |
| Louth to Oltenita | 1,361.93 mi (2,191.81 km) |
| Louth to Onesti | 1,281.26 mi (2,061.99 km) |
| Louth to Oradea | 1,056.90 mi (1,700.92 km) |
| Louth to Orastie | 1,154.44 mi (1,857.89 km) |
| Louth to Oravita | 1,129.08 mi (1,817.07 km) |
| Louth to Orsova | 1,169.86 mi (1,882.70 km) |
| Louth to Otelu Rosu | 1,134.71 mi (1,826.14 km) |
| Louth to Otopeni | 1,320.27 mi (2,124.77 km) |
