| Aveiro to Navodari | 1,899.35 mi (3,056.70 km) |
| Aveiro to Negresti-Oas | 1,650.59 mi (2,656.37 km) |
| Aveiro to Nehoiu | 1,781.84 mi (2,867.60 km) |
| Aveiro to Ocna Mures | 1,664.20 mi (2,678.27 km) |
| Aveiro to Odobesti | 1,817.77 mi (2,925.41 km) |
| Aveiro to Odorheiu Secuiesc | 1,732.81 mi (2,788.69 km) |
| Aveiro to Oltenita | 1,803.28 mi (2,902.11 km) |
| Aveiro to Onesti | 1,802.87 mi (2,901.44 km) |
| Aveiro to Oradea | 1,575.49 mi (2,535.51 km) |
| Aveiro to Orastie | 1,631.54 mi (2,625.70 km) |
| Aveiro to Oravita | 1,557.24 mi (2,506.14 km) |
| Aveiro to Orsova | 1,592.09 mi (2,562.22 km) |
| Aveiro to Otelu Rosu | 1,590.17 mi (2,559.13 km) |
| Aveiro to Otopeni | 1,773.03 mi (2,853.41 km) |
| Aveiro to Ovidiu | 1,897.06 mi (3,053.03 km) |
