| Barbastro to Orangevale (California) | 5,754.33 mi (9,260.69 km) |
| Barbastro to Orchards (Washington) | 5,424.62 mi (8,730.08 km) |
| Barbastro to Orcutt (California) | 5,928.81 mi (9,541.50 km) |
| Barbastro to Oregon (Ohio) | 4,112.23 mi (6,618.00 km) |
| Barbastro to Oregon (Wisconsin) | 4,323.35 mi (6,957.76 km) |
| Barbastro to Oregon City (Oregon) | 5,445.01 mi (8,762.89 km) |
| Barbastro to Orem (Utah) | 5,330.27 mi (8,578.24 km) |
| Barbastro to Orinda (California) | 5,830.41 mi (9,383.14 km) |
| Barbastro to Orland Park (Illinois) | 4,307.72 mi (6,932.61 km) |
| Barbastro to Orlando (Florida) | 4,519.13 mi (7,272.84 km) |
| Barbastro to Ormond Beach (Florida) | 4,474.29 mi (7,200.67 km) |
| Barbastro to Oro Valley (Arizona) | 5,689.28 mi (9,156.01 km) |
| Barbastro to Oroville (California) | 5,722.84 mi (9,210.02 km) |
| Barbastro to Oshkosh (Wisconsin) | 4,247.44 mi (6,835.59 km) |
| Barbastro to Oskaloosa (Iowa) | 4,524.58 mi (7,281.61 km) |
