| Portlethen to Nasaud | 1,299.39 mi (2,091.17 km) |
| Portlethen to Navodari | 1,587.05 mi (2,554.11 km) |
| Portlethen to Negresti-Oas | 1,238.26 mi (1,992.79 km) |
| Portlethen to Nehoiu | 1,456.30 mi (2,343.68 km) |
| Portlethen to Ocna Mures | 1,321.74 mi (2,127.14 km) |
| Portlethen to Odobesti | 1,463.47 mi (2,355.23 km) |
| Portlethen to Odorheiu Secuiesc | 1,375.62 mi (2,213.85 km) |
| Portlethen to Oltenita | 1,529.68 mi (2,461.79 km) |
| Portlethen to Onesti | 1,430.02 mi (2,301.39 km) |
| Portlethen to Oradea | 1,222.58 mi (1,967.55 km) |
| Portlethen to Orastie | 1,325.04 mi (2,132.44 km) |
| Portlethen to Oravita | 1,314.73 mi (2,115.86 km) |
| Portlethen to Orsova | 1,354.25 mi (2,179.46 km) |
| Portlethen to Otelu Rosu | 1,312.75 mi (2,112.67 km) |
| Portlethen to Otopeni | 1,487.20 mi (2,393.42 km) |
