| Portchester to Nasaud | 1,175.24 mi (1,891.36 km) |
| Portchester to Navodari | 1,445.74 mi (2,326.69 km) |
| Portchester to Negresti-Oas | 1,118.11 mi (1,799.42 km) |
| Portchester to Nehoiu | 1,312.47 mi (2,112.21 km) |
| Portchester to Ocna Mures | 1,175.47 mi (1,891.73 km) |
| Portchester to Odobesti | 1,333.01 mi (2,145.27 km) |
| Portchester to Odorheiu Secuiesc | 1,240.31 mi (1,996.08 km) |
| Portchester to Oltenita | 1,368.21 mi (2,201.93 km) |
| Portchester to Onesti | 1,305.77 mi (2,101.43 km) |
| Portchester to Oradea | 1,072.48 mi (1,725.99 km) |
| Portchester to Orastie | 1,162.74 mi (1,871.25 km) |
| Portchester to Oravita | 1,123.51 mi (1,808.11 km) |
| Portchester to Orsova | 1,164.51 mi (1,874.09 km) |
| Portchester to Otelu Rosu | 1,136.49 mi (1,829.01 km) |
| Portchester to Otopeni | 1,328.12 mi (2,137.41 km) |
