| Madison Heights to Oberkirch | 4,162.91 mi (6,699.56 km) |
| Madison Heights to Obernburg am Main | 4,155.80 mi (6,688.11 km) |
| Madison Heights to Obernkirchen | 4,067.95 mi (6,546.73 km) |
| Madison Heights to Oberschleissheim | 4,307.69 mi (6,932.55 km) |
| Madison Heights to Oberstdorf | 4,290.33 mi (6,904.63 km) |
| Madison Heights to Obertraubling | 4,302.80 mi (6,924.68 km) |
| Madison Heights to Obertshausen | 4,135.91 mi (6,656.11 km) |
| Madison Heights to Oberursel | 4,121.30 mi (6,632.59 km) |
| Madison Heights to Ochsenfurt | 4,197.76 mi (6,755.64 km) |
| Madison Heights to Ochsenhausen | 4,252.30 mi (6,843.42 km) |
| Madison Heights to Ochtrup | 3,999.47 mi (6,436.52 km) |
| Madison Heights to Odenthal | 4,036.98 mi (6,496.88 km) |
| Madison Heights to Oelde | 4,047.66 mi (6,514.09 km) |
| Madison Heights to Oelsnitz | 4,247.24 mi (6,835.27 km) |
| Madison Heights to Oer-Erkenschwick | 4,020.98 mi (6,471.14 km) |
