| Van Buren to Oberkirch | 4,935.49 mi (7,942.91 km) |
| Van Buren to Obernburg am Main | 4,926.23 mi (7,928.00 km) |
| Van Buren to Obernkirchen | 4,834.34 mi (7,780.12 km) |
| Van Buren to Oberschleissheim | 5,078.83 mi (8,173.58 km) |
| Van Buren to Oberstdorf | 5,063.08 mi (8,148.24 km) |
| Van Buren to Obertraubling | 5,072.61 mi (8,163.58 km) |
| Van Buren to Obertshausen | 4,906.20 mi (7,895.76 km) |
| Van Buren to Oberursel | 4,891.54 mi (7,872.17 km) |
| Van Buren to Ochsenfurt | 4,967.91 mi (7,995.08 km) |
| Van Buren to Ochsenhausen | 5,024.51 mi (8,086.17 km) |
| Van Buren to Ochtrup | 4,767.30 mi (7,672.23 km) |
| Van Buren to Odenthal | 4,806.82 mi (7,735.83 km) |
| Van Buren to Oelde | 4,815.54 mi (7,749.86 km) |
| Van Buren to Oelsnitz | 5,014.76 mi (8,070.47 km) |
| Van Buren to Oer-Erkenschwick | 4,789.76 mi (7,708.37 km) |
