| Casas Adobes to Oberkirch | 5,706.92 mi (9,184.41 km) |
| Casas Adobes to Obernburg am Main | 5,681.69 mi (9,143.80 km) |
| Casas Adobes to Obernkirchen | 5,567.98 mi (8,960.80 km) |
| Casas Adobes to Oberschleissheim | 5,836.97 mi (9,393.69 km) |
| Casas Adobes to Oberstdorf | 5,834.22 mi (9,389.26 km) |
| Casas Adobes to Obertraubling | 5,821.84 mi (9,369.34 km) |
| Casas Adobes to Obertshausen | 5,661.02 mi (9,110.53 km) |
| Casas Adobes to Oberursel | 5,646.26 mi (9,086.78 km) |
| Casas Adobes to Ochsenfurt | 5,720.91 mi (9,206.92 km) |
| Casas Adobes to Ochsenhausen | 5,791.60 mi (9,320.68 km) |
| Casas Adobes to Ochtrup | 5,509.70 mi (8,867.00 km) |
| Casas Adobes to Odenthal | 5,560.32 mi (8,948.48 km) |
| Casas Adobes to Oelde | 5,557.35 mi (8,943.68 km) |
| Casas Adobes to Oelsnitz | 5,751.37 mi (9,255.94 km) |
| Casas Adobes to Oer-Erkenschwick | 5,537.13 mi (8,911.15 km) |
