| Horn Lake to Nasaud | 5,458.79 mi (8,785.07 km) |
| Horn Lake to Navodari | 5,746.25 mi (9,247.70 km) |
| Horn Lake to Negresti-Oas | 5,397.67 mi (8,686.71 km) |
| Horn Lake to Nehoiu | 5,614.83 mi (9,036.20 km) |
| Horn Lake to Ocna Mures | 5,479.13 mi (8,817.81 km) |
| Horn Lake to Odobesti | 5,622.91 mi (9,049.20 km) |
| Horn Lake to Odorheiu Secuiesc | 5,534.63 mi (8,907.13 km) |
| Horn Lake to Oltenita | 5,685.65 mi (9,150.17 km) |
| Horn Lake to Onesti | 5,589.47 mi (8,995.38 km) |
| Horn Lake to Oradea | 5,378.36 mi (8,655.63 km) |
| Horn Lake to Orastie | 5,479.02 mi (8,817.63 km) |
| Horn Lake to Oravita | 5,458.03 mi (8,783.85 km) |
| Horn Lake to Orsova | 5,498.73 mi (8,849.36 km) |
| Horn Lake to Otelu Rosu | 5,462.20 mi (8,790.56 km) |
| Horn Lake to Otopeni | 5,643.40 mi (9,082.18 km) |
