| Leek to Nasaud | 1,228.01 mi (1,976.29 km) |
| Leek to Navodari | 1,508.06 mi (2,426.99 km) |
| Leek to Negresti-Oas | 1,168.51 mi (1,880.53 km) |
| Leek to Nehoiu | 1,374.43 mi (2,211.93 km) |
| Leek to Ocna Mures | 1,236.73 mi (1,990.33 km) |
| Leek to Odobesti | 1,390.11 mi (2,237.17 km) |
| Leek to Odorheiu Secuiesc | 1,298.20 mi (2,089.25 km) |
| Leek to Oltenita | 1,437.42 mi (2,313.31 km) |
| Leek to Onesti | 1,360.21 mi (2,189.05 km) |
| Leek to Oradea | 1,133.75 mi (1,824.59 km) |
| Leek to Orastie | 1,229.99 mi (1,979.48 km) |
| Leek to Oravita | 1,201.40 mi (1,933.47 km) |
| Leek to Orsova | 1,242.33 mi (1,999.34 km) |
| Leek to Otelu Rosu | 1,208.78 mi (1,945.35 km) |
| Leek to Otopeni | 1,396.04 mi (2,246.70 km) |
