| Vila Nova de Gaia to Oberkirch | 961.73 mi (1,547.76 km) |
| Vila Nova de Gaia to Obernburg am Main | 1,045.45 mi (1,682.49 km) |
| Vila Nova de Gaia to Obernkirchen | 1,133.65 mi (1,824.44 km) |
| Vila Nova de Gaia to Oberschleissheim | 1,102.09 mi (1,773.64 km) |
| Vila Nova de Gaia to Oberstdorf | 1,027.01 mi (1,652.82 km) |
| Vila Nova de Gaia to Obertraubling | 1,144.57 mi (1,842.01 km) |
| Vila Nova de Gaia to Obertshausen | 1,041.07 mi (1,675.43 km) |
| Vila Nova de Gaia to Oberursel | 1,035.99 mi (1,667.26 km) |
| Vila Nova de Gaia to Ochsenfurt | 1,076.20 mi (1,731.97 km) |
| Vila Nova de Gaia to Ochsenhausen | 1,027.77 mi (1,654.04 km) |
| Vila Nova de Gaia to Ochtrup | 1,066.48 mi (1,716.34 km) |
| Vila Nova de Gaia to Odenthal | 1,014.18 mi (1,632.16 km) |
| Vila Nova de Gaia to Oelde | 1,082.80 mi (1,742.59 km) |
| Vila Nova de Gaia to Oelsnitz | 1,183.11 mi (1,904.03 km) |
| Vila Nova de Gaia to Oer-Erkenschwick | 1,044.15 mi (1,680.40 km) |
