| Hamtramck to Oerlinghausen | 4,065.63 mi (6,542.99 km) |
| Hamtramck to Oestrich-Winkel | 4,110.07 mi (6,614.52 km) |
| Hamtramck to Offenburg | 4,162.65 mi (6,699.14 km) |
| Hamtramck to Oftersheim | 4,155.01 mi (6,686.84 km) |
| Hamtramck to Ohrdruf | 4,182.59 mi (6,731.22 km) |
| Hamtramck to Ohringen | 4,196.25 mi (6,753.21 km) |
| Hamtramck to Olbernhau | 4,284.02 mi (6,894.47 km) |
| Hamtramck to Olching | 4,303.35 mi (6,925.57 km) |
| Hamtramck to Oldenburg | 4,008.55 mi (6,451.14 km) |
| Hamtramck to Oldenburg in Holstein | 4,063.11 mi (6,538.94 km) |
| Hamtramck to Olfen | 4,026.87 mi (6,480.62 km) |
| Hamtramck to Olpe | 4,067.90 mi (6,546.66 km) |
| Hamtramck to Olsberg | 4,080.48 mi (6,566.89 km) |
| Hamtramck to Oranienburg | 4,201.42 mi (6,761.54 km) |
| Hamtramck to Ortenberg | 4,137.26 mi (6,658.27 km) |
