| East Cleveland to Oerlinghausen | 4,052.34 mi (6,521.62 km) |
| East Cleveland to Oestrich-Winkel | 4,093.07 mi (6,587.17 km) |
| East Cleveland to Offenburg | 4,143.09 mi (6,667.65 km) |
| East Cleveland to Oftersheim | 4,137.34 mi (6,658.41 km) |
| East Cleveland to Ohrdruf | 4,168.67 mi (6,708.83 km) |
| East Cleveland to Ohringen | 4,178.89 mi (6,725.27 km) |
| East Cleveland to Olbernhau | 4,271.52 mi (6,874.34 km) |
| East Cleveland to Olching | 4,285.60 mi (6,897.01 km) |
| East Cleveland to Oldenburg | 3,997.02 mi (6,432.59 km) |
| East Cleveland to Oldenburg in Holstein | 4,055.08 mi (6,526.02 km) |
| East Cleveland to Olfen | 4,012.40 mi (6,457.34 km) |
| East Cleveland to Olpe | 4,052.51 mi (6,521.89 km) |
| East Cleveland to Olsberg | 4,066.04 mi (6,543.66 km) |
| East Cleveland to Oranienburg | 4,192.22 mi (6,746.72 km) |
| East Cleveland to Ortenberg | 4,121.51 mi (6,632.93 km) |
