| Macomb to Oerlinghausen | 4,436.33 mi (7,139.58 km) |
| Macomb to Oestrich-Winkel | 4,487.62 mi (7,222.12 km) |
| Macomb to Offenburg | 4,544.62 mi (7,313.86 km) |
| Macomb to Oftersheim | 4,533.67 mi (7,296.24 km) |
| Macomb to Ohrdruf | 4,554.25 mi (7,329.36 km) |
| Macomb to Ohringen | 4,574.28 mi (7,361.59 km) |
| Macomb to Olbernhau | 4,652.72 mi (7,487.83 km) |
| Macomb to Olching | 4,681.88 mi (7,534.76 km) |
| Macomb to Oldenburg | 4,375.94 mi (7,042.40 km) |
| Macomb to Oldenburg in Holstein | 4,423.15 mi (7,118.38 km) |
| Macomb to Olfen | 4,399.92 mi (7,080.99 km) |
| Macomb to Olpe | 4,442.60 mi (7,149.68 km) |
| Macomb to Olsberg | 4,453.35 mi (7,166.98 km) |
| Macomb to Oranienburg | 4,563.61 mi (7,344.41 km) |
| Macomb to Ortenberg | 4,512.47 mi (7,262.11 km) |
