| Opa-locka to Oerlinghausen | 4,783.94 mi (7,699.01 km) |
| Opa-locka to Oestrich-Winkel | 4,793.51 mi (7,714.40 km) |
| Opa-locka to Offenburg | 4,820.47 mi (7,757.80 km) |
| Opa-locka to Oftersheim | 4,830.88 mi (7,774.54 km) |
| Opa-locka to Ohrdruf | 4,891.95 mi (7,872.83 km) |
| Opa-locka to Ohringen | 4,873.77 mi (7,843.58 km) |
| Opa-locka to Olbernhau | 5,003.21 mi (8,051.89 km) |
| Opa-locka to Olching | 4,974.06 mi (8,004.97 km) |
| Opa-locka to Oldenburg | 4,743.88 mi (7,634.54 km) |
| Opa-locka to Oldenburg in Holstein | 4,826.98 mi (7,768.27 km) |
| Opa-locka to Olfen | 4,735.74 mi (7,621.43 km) |
| Opa-locka to Olpe | 4,767.25 mi (7,672.15 km) |
| Opa-locka to Olsberg | 4,788.07 mi (7,705.65 km) |
| Opa-locka to Oranienburg | 4,951.66 mi (7,968.93 km) |
| Opa-locka to Ortenberg | 4,831.35 mi (7,775.30 km) |
