| Kalamazoo to Oberkirch | 4,269.31 mi (6,870.79 km) |
| Kalamazoo to Obernburg am Main | 4,260.07 mi (6,855.91 km) |
| Kalamazoo to Obernkirchen | 4,169.08 mi (6,709.49 km) |
| Kalamazoo to Oberschleissheim | 4,412.60 mi (7,101.40 km) |
| Kalamazoo to Oberstdorf | 4,396.91 mi (7,076.15 km) |
| Kalamazoo to Obertraubling | 4,406.54 mi (7,091.64 km) |
| Kalamazoo to Obertshausen | 4,240.05 mi (6,823.71 km) |
| Kalamazoo to Oberursel | 4,225.40 mi (6,800.12 km) |
| Kalamazoo to Ochsenfurt | 4,301.78 mi (6,923.05 km) |
| Kalamazoo to Ochsenhausen | 4,358.29 mi (7,013.99 km) |
| Kalamazoo to Ochtrup | 4,101.63 mi (6,600.94 km) |
| Kalamazoo to Odenthal | 4,140.73 mi (6,663.87 km) |
| Kalamazoo to Oelde | 4,149.86 mi (6,678.55 km) |
| Kalamazoo to Oelsnitz | 4,349.19 mi (6,999.34 km) |
| Kalamazoo to Oer-Erkenschwick | 4,123.87 mi (6,636.72 km) |
