| Appenzell to Oberkirch | 103.36 mi (166.35 km) |
| Appenzell to Obernburg am Main | 173.65 mi (279.47 km) |
| Appenzell to Obernkirchen | 341.10 mi (548.95 km) |
| Appenzell to Oberschleissheim | 118.20 mi (190.22 km) |
| Appenzell to Oberstdorf | 40.70 mi (65.50 km) |
| Appenzell to Obertraubling | 169.67 mi (273.06 km) |
| Appenzell to Obertshausen | 190.72 mi (306.94 km) |
| Appenzell to Oberursel | 201.95 mi (325.00 km) |
| Appenzell to Ochsenfurt | 162.81 mi (262.02 km) |
| Appenzell to Ochsenhausen | 56.72 mi (91.28 km) |
| Appenzell to Ochtrup | 350.95 mi (564.80 km) |
| Appenzell to Odenthal | 275.91 mi (444.03 km) |
| Appenzell to Oelde | 316.04 mi (508.62 km) |
| Appenzell to Oelsnitz | 246.95 mi (397.43 km) |
| Appenzell to Oer-Erkenschwick | 313.15 mi (503.96 km) |
