| Macomb to Oberkirch | 4,547.68 mi (7,318.78 km) |
| Macomb to Obernburg am Main | 4,535.80 mi (7,299.67 km) |
| Macomb to Obernkirchen | 4,440.81 mi (7,146.80 km) |
| Macomb to Oberschleissheim | 4,689.06 mi (7,546.32 km) |
| Macomb to Oberstdorf | 4,675.43 mi (7,524.38 km) |
| Macomb to Obertraubling | 4,681.51 mi (7,534.16 km) |
| Macomb to Obertshausen | 4,515.64 mi (7,267.23 km) |
| Macomb to Oberursel | 4,500.95 mi (7,243.57 km) |
| Macomb to Ochsenfurt | 4,577.19 mi (7,366.27 km) |
| Macomb to Ochsenhausen | 4,636.11 mi (7,461.09 km) |
| Macomb to Ochtrup | 4,374.78 mi (7,040.52 km) |
| Macomb to Odenthal | 4,415.91 mi (7,106.71 km) |
| Macomb to Oelde | 4,423.01 mi (7,118.14 km) |
| Macomb to Oelsnitz | 4,621.87 mi (7,438.18 km) |
| Macomb to Oer-Erkenschwick | 4,397.94 mi (7,077.80 km) |
