| Madison Heights to Oerlinghausen | 4,062.00 mi (6,537.16 km) |
| Madison Heights to Oestrich-Winkel | 4,106.73 mi (6,609.14 km) |
| Madison Heights to Offenburg | 4,159.51 mi (6,694.09 km) |
| Madison Heights to Oftersheim | 4,151.72 mi (6,681.54 km) |
| Madison Heights to Ohrdruf | 4,179.01 mi (6,725.46 km) |
| Madison Heights to Ohringen | 4,192.93 mi (6,747.87 km) |
| Madison Heights to Olbernhau | 4,280.33 mi (6,888.53 km) |
| Madison Heights to Olching | 4,300.06 mi (6,920.28 km) |
| Madison Heights to Oldenburg | 4,004.79 mi (6,445.09 km) |
| Madison Heights to Oldenburg in Holstein | 4,059.09 mi (6,532.48 km) |
| Madison Heights to Olfen | 4,023.34 mi (6,474.94 km) |
| Madison Heights to Olpe | 4,064.44 mi (6,541.09 km) |
| Madison Heights to Olsberg | 4,076.94 mi (6,561.20 km) |
| Madison Heights to Oranienburg | 4,197.49 mi (6,755.21 km) |
| Madison Heights to Ortenberg | 4,133.82 mi (6,652.74 km) |
