| North Royalton to Oberkirch | 4,162.98 mi (6,699.67 km) |
| North Royalton to Obernburg am Main | 4,159.08 mi (6,693.39 km) |
| North Royalton to Obernkirchen | 4,075.79 mi (6,559.35 km) |
| North Royalton to Oberschleissheim | 4,309.88 mi (6,936.08 km) |
| North Royalton to Oberstdorf | 4,290.02 mi (6,904.12 km) |
| North Royalton to Obertraubling | 4,306.73 mi (6,931.01 km) |
| North Royalton to Obertshausen | 4,139.39 mi (6,661.71 km) |
| North Royalton to Oberursel | 4,124.86 mi (6,638.31 km) |
| North Royalton to Ochsenfurt | 4,201.36 mi (6,761.43 km) |
| North Royalton to Ochsenhausen | 4,252.93 mi (6,844.43 km) |
| North Royalton to Ochtrup | 4,005.92 mi (6,446.90 km) |
| North Royalton to Odenthal | 4,041.10 mi (6,503.52 km) |
| North Royalton to Oelde | 4,054.03 mi (6,524.33 km) |
| North Royalton to Oelsnitz | 4,253.77 mi (6,845.78 km) |
| North Royalton to Oer-Erkenschwick | 4,026.37 mi (6,479.82 km) |
