| Brea to Orangevale (California) | 378.33 mi (608.87 km) |
| Brea to Orchards (Washington) | 849.27 mi (1,366.76 km) |
| Brea to Orcutt (California) | 159.67 mi (256.97 km) |
| Brea to Oregon (Ohio) | 1,940.17 mi (3,122.41 km) |
| Brea to Oregon (Wisconsin) | 1,652.06 mi (2,658.74 km) |
| Brea to Oregon City (Oregon) | 827.53 mi (1,331.78 km) |
| Brea to Orem (Utah) | 555.82 mi (894.51 km) |
| Brea to Orinda (California) | 364.55 mi (586.69 km) |
| Brea to Orland Park (Illinois) | 1,712.50 mi (2,756.01 km) |
| Brea to Orlando (Florida) | 2,179.73 mi (3,507.93 km) |
| Brea to Ormond Beach (Florida) | 2,175.10 mi (3,500.48 km) |
| Brea to Oro Valley (Arizona) | 411.64 mi (662.47 km) |
| Brea to Oroville (California) | 436.13 mi (701.88 km) |
| Brea to Oshkosh (Wisconsin) | 1,709.88 mi (2,751.78 km) |
| Brea to Oskaloosa (Iowa) | 1,465.10 mi (2,357.86 km) |
