| Bluffton to Oberkirch | 4,549.97 mi (7,322.46 km) |
| Bluffton to Obernburg am Main | 4,560.29 mi (7,339.08 km) |
| Bluffton to Obernkirchen | 4,497.50 mi (7,238.03 km) |
| Bluffton to Oberschleissheim | 4,704.57 mi (7,571.28 km) |
| Bluffton to Oberstdorf | 4,673.76 mi (7,521.69 km) |
| Bluffton to Obertraubling | 4,709.11 mi (7,578.57 km) |
| Bluffton to Obertshausen | 4,541.72 mi (7,309.19 km) |
| Bluffton to Oberursel | 4,527.68 mi (7,286.59 km) |
| Bluffton to Ochsenfurt | 4,603.48 mi (7,408.59 km) |
| Bluffton to Ochsenhausen | 4,641.32 mi (7,469.49 km) |
| Bluffton to Ochtrup | 4,422.56 mi (7,117.43 km) |
| Bluffton to Odenthal | 4,447.38 mi (7,157.37 km) |
| Bluffton to Oelde | 4,469.75 mi (7,193.36 km) |
| Bluffton to Oelsnitz | 4,668.00 mi (7,512.42 km) |
| Bluffton to Oer-Erkenschwick | 4,438.28 mi (7,142.72 km) |
