| Mattoon to Oberkirch | 4,506.71 mi (7,252.85 km) |
| Mattoon to Obernburg am Main | 4,498.65 mi (7,239.88 km) |
| Mattoon to Obernkirchen | 4,408.99 mi (7,095.59 km) |
| Mattoon to Oberschleissheim | 4,650.86 mi (7,484.84 km) |
| Mattoon to Oberstdorf | 4,634.21 mi (7,458.04 km) |
| Mattoon to Obertraubling | 4,645.39 mi (7,476.03 km) |
| Mattoon to Obertshausen | 4,478.70 mi (7,207.78 km) |
| Mattoon to Oberursel | 4,464.07 mi (7,184.22 km) |
| Mattoon to Ochsenfurt | 4,540.49 mi (7,307.22 km) |
| Mattoon to Ochsenhausen | 4,595.95 mi (7,396.46 km) |
| Mattoon to Ochtrup | 4,341.15 mi (6,986.41 km) |
| Mattoon to Odenthal | 4,379.56 mi (7,048.22 km) |
| Mattoon to Oelde | 4,389.37 mi (7,064.01 km) |
| Mattoon to Oelsnitz | 4,588.81 mi (7,384.97 km) |
| Mattoon to Oer-Erkenschwick | 4,363.09 mi (7,021.71 km) |
