| Alloa to Oberkirch | 723.35 mi (1,164.12 km) |
| Alloa to Obernburg am Main | 689.20 mi (1,109.15 km) |
| Alloa to Obernkirchen | 584.55 mi (940.74 km) |
| Alloa to Oberschleissheim | 844.53 mi (1,359.14 km) |
| Alloa to Oberstdorf | 847.82 mi (1,364.43 km) |
| Alloa to Obertraubling | 829.74 mi (1,335.34 km) |
| Alloa to Obertshausen | 668.47 mi (1,075.80 km) |
| Alloa to Oberursel | 653.74 mi (1,052.09 km) |
| Alloa to Ochsenfurt | 728.20 mi (1,171.92 km) |
| Alloa to Ochsenhausen | 802.98 mi (1,292.27 km) |
| Alloa to Ochtrup | 519.15 mi (835.48 km) |
| Alloa to Odenthal | 567.81 mi (913.80 km) |
| Alloa to Oelde | 567.28 mi (912.96 km) |
| Alloa to Oelsnitz | 765.47 mi (1,231.90 km) |
| Alloa to Oer-Erkenschwick | 544.78 mi (876.75 km) |
