| Port Royal to Nasaud | 5,243.32 mi (8,438.31 km) |
| Port Royal to Navodari | 5,526.03 mi (8,893.29 km) |
| Port Royal to Negresti-Oas | 5,182.96 mi (8,341.17 km) |
| Port Royal to Nehoiu | 5,392.52 mi (8,678.42 km) |
| Port Royal to Ocna Mures | 5,254.90 mi (8,456.94 km) |
| Port Royal to Odobesti | 5,406.67 mi (8,701.19 km) |
| Port Royal to Odorheiu Secuiesc | 5,315.39 mi (8,554.29 km) |
| Port Royal to Oltenita | 5,455.55 mi (8,779.87 km) |
| Port Royal to Onesti | 5,375.61 mi (8,651.21 km) |
| Port Royal to Oradea | 5,152.04 mi (8,291.41 km) |
| Port Royal to Orastie | 5,248.25 mi (8,446.24 km) |
| Port Royal to Oravita | 5,215.50 mi (8,393.54 km) |
| Port Royal to Orsova | 5,256.54 mi (8,459.59 km) |
| Port Royal to Otelu Rosu | 5,225.75 mi (8,410.04 km) |
| Port Royal to Otopeni | 5,414.33 mi (8,713.52 km) |
