| Guardamar del Segura to Oberkirch | 843.53 mi (1,357.53 km) |
| Guardamar del Segura to Obernburg am Main | 945.01 mi (1,520.84 km) |
| Guardamar del Segura to Obernkirchen | 1,086.76 mi (1,748.97 km) |
| Guardamar del Segura to Oberschleissheim | 931.57 mi (1,499.21 km) |
| Guardamar del Segura to Oberstdorf | 848.28 mi (1,365.18 km) |
| Guardamar del Segura to Obertraubling | 985.83 mi (1,586.53 km) |
| Guardamar del Segura to Obertshausen | 950.41 mi (1,529.54 km) |
| Guardamar del Segura to Oberursel | 952.26 mi (1,532.51 km) |
| Guardamar del Segura to Ochsenfurt | 958.72 mi (1,542.91 km) |
| Guardamar del Segura to Ochsenhausen | 871.22 mi (1,402.09 km) |
| Guardamar del Segura to Ochtrup | 1,046.08 mi (1,683.51 km) |
| Guardamar del Segura to Odenthal | 971.40 mi (1,563.32 km) |
| Guardamar del Segura to Oelde | 1,040.81 mi (1,675.02 km) |
| Guardamar del Segura to Oelsnitz | 1,058.88 mi (1,704.11 km) |
| Guardamar del Segura to Oer-Erkenschwick | 1,011.83 mi (1,628.38 km) |
