| Manzanares el Real to Olympia Heights (Florida) | 4,402.32 mi (7,084.85 km) |
| Manzanares el Real to Omaha (Nebraska) | 4,552.43 mi (7,326.44 km) |
| Manzanares el Real to On Top of the World Designated Place (Florida) | 4,369.60 mi (7,032.20 km) |
| Manzanares el Real to Onalaska (Wisconsin) | 4,247.23 mi (6,835.25 km) |
| Manzanares el Real to Oneida (New York) | 3,578.59 mi (5,759.18 km) |
| Manzanares el Real to Oneonta (New York) | 3,568.21 mi (5,742.48 km) |
| Manzanares el Real to Ontario (California) | 5,772.68 mi (9,290.22 km) |
| Manzanares el Real to Ontario (Oregon) | 5,260.83 mi (8,466.48 km) |
| Manzanares el Real to Opa-locka (Florida) | 4,391.13 mi (7,066.84 km) |
| Manzanares el Real to Opelika (Alabama) | 4,387.24 mi (7,060.58 km) |
| Manzanares el Real to Opelousas (Louisiana) | 4,795.82 mi (7,718.12 km) |
| Manzanares el Real to Orange (California) | 5,792.95 mi (9,322.85 km) |
| Manzanares el Real to Orange (Texas) | 4,892.98 mi (7,874.49 km) |
| Manzanares el Real to Orange City (Florida) | 4,325.95 mi (6,961.94 km) |
| Manzanares el Real to Orangeburg (South Carolina) | 4,135.76 mi (6,655.87 km) |
