| Hamtramck to Oberkirch | 4,166.07 mi (6,704.64 km) |
| Hamtramck to Obernburg am Main | 4,159.18 mi (6,693.55 km) |
| Hamtramck to Obernkirchen | 4,071.63 mi (6,552.66 km) |
| Hamtramck to Oberschleissheim | 4,310.99 mi (6,937.87 km) |
| Hamtramck to Oberstdorf | 4,293.47 mi (6,909.67 km) |
| Hamtramck to Obertraubling | 4,306.22 mi (6,930.20 km) |
| Hamtramck to Obertshausen | 4,139.30 mi (6,661.56 km) |
| Hamtramck to Oberursel | 4,124.70 mi (6,638.06 km) |
| Hamtramck to Ochsenfurt | 4,201.16 mi (6,761.11 km) |
| Hamtramck to Ochsenhausen | 4,255.50 mi (6,848.57 km) |
| Hamtramck to Ochtrup | 4,003.05 mi (6,442.29 km) |
| Hamtramck to Odenthal | 4,040.41 mi (6,502.41 km) |
| Hamtramck to Oelde | 4,051.25 mi (6,519.85 km) |
| Hamtramck to Oelsnitz | 4,250.84 mi (6,841.06 km) |
| Hamtramck to Oer-Erkenschwick | 4,024.49 mi (6,476.80 km) |
