| Alcantarilla to Oberkirch | 865.25 mi (1,392.48 km) |
| Alcantarilla to Obernburg am Main | 966.40 mi (1,555.27 km) |
| Alcantarilla to Obernkirchen | 1,106.02 mi (1,779.96 km) |
| Alcantarilla to Oberschleissheim | 956.41 mi (1,539.19 km) |
| Alcantarilla to Oberstdorf | 873.12 mi (1,405.15 km) |
| Alcantarilla to Obertraubling | 1,010.34 mi (1,625.98 km) |
| Alcantarilla to Obertshausen | 971.31 mi (1,563.18 km) |
| Alcantarilla to Oberursel | 972.80 mi (1,565.58 km) |
| Alcantarilla to Ochsenfurt | 981.07 mi (1,578.88 km) |
| Alcantarilla to Ochsenhausen | 895.09 mi (1,440.51 km) |
| Alcantarilla to Ochtrup | 1,063.67 mi (1,711.81 km) |
| Alcantarilla to Odenthal | 989.82 mi (1,592.96 km) |
| Alcantarilla to Oelde | 1,059.57 mi (1,705.21 km) |
| Alcantarilla to Oelsnitz | 1,082.03 mi (1,741.35 km) |
| Alcantarilla to Oer-Erkenschwick | 1,029.90 mi (1,657.46 km) |
