| Cleveland Heights to Oerlinghausen | 4,052.73 mi (6,522.24 km) |
| Cleveland Heights to Oestrich-Winkel | 4,093.40 mi (6,587.69 km) |
| Cleveland Heights to Offenburg | 4,143.37 mi (6,668.10 km) |
| Cleveland Heights to Oftersheim | 4,137.65 mi (6,658.91 km) |
| Cleveland Heights to Ohrdruf | 4,169.05 mi (6,709.44 km) |
| Cleveland Heights to Ohringen | 4,179.21 mi (6,725.79 km) |
| Cleveland Heights to Olbernhau | 4,271.92 mi (6,874.98 km) |
| Cleveland Heights to Olching | 4,285.91 mi (6,897.51 km) |
| Cleveland Heights to Oldenburg | 3,997.44 mi (6,433.25 km) |
| Cleveland Heights to Oldenburg in Holstein | 4,055.56 mi (6,526.79 km) |
| Cleveland Heights to Olfen | 4,012.77 mi (6,457.93 km) |
| Cleveland Heights to Olpe | 4,052.87 mi (6,522.46 km) |
| Cleveland Heights to Olsberg | 4,066.41 mi (6,544.25 km) |
| Cleveland Heights to Oranienburg | 4,192.67 mi (6,747.45 km) |
| Cleveland Heights to Ortenberg | 4,121.86 mi (6,633.49 km) |
