| Hoyo de Manzanares to Orangevale (California) | 5,682.21 mi (9,144.63 km) |
| Hoyo de Manzanares to Orchards (Washington) | 5,373.41 mi (8,647.66 km) |
| Hoyo de Manzanares to Orcutt (California) | 5,845.32 mi (9,407.13 km) |
| Hoyo de Manzanares to Oregon (Ohio) | 3,980.54 mi (6,406.06 km) |
| Hoyo de Manzanares to Oregon (Wisconsin) | 4,204.55 mi (6,766.57 km) |
| Hoyo de Manzanares to Oregon City (Oregon) | 5,393.01 mi (8,679.22 km) |
| Hoyo de Manzanares to Orem (Utah) | 5,242.24 mi (8,436.56 km) |
| Hoyo de Manzanares to Orinda (California) | 5,758.44 mi (9,267.31 km) |
| Hoyo de Manzanares to Orland Park (Illinois) | 4,182.32 mi (6,730.79 km) |
| Hoyo de Manzanares to Orlando (Florida) | 4,346.55 mi (6,995.10 km) |
| Hoyo de Manzanares to Ormond Beach (Florida) | 4,303.36 mi (6,925.59 km) |
| Hoyo de Manzanares to Oro Valley (Arizona) | 5,578.88 mi (8,978.33 km) |
| Hoyo de Manzanares to Oroville (California) | 5,653.55 mi (9,098.50 km) |
| Hoyo de Manzanares to Oshkosh (Wisconsin) | 4,131.11 mi (6,648.37 km) |
| Hoyo de Manzanares to Oskaloosa (Iowa) | 4,405.51 mi (7,089.98 km) |
