| Penafiel to Orangevale (California) | 5,490.16 mi (8,835.55 km) |
| Penafiel to Orchards (Washington) | 5,195.34 mi (8,361.10 km) |
| Penafiel to Orcutt (California) | 5,646.32 mi (9,086.87 km) |
| Penafiel to Oregon (Ohio) | 3,759.69 mi (6,050.64 km) |
| Penafiel to Oregon (Wisconsin) | 3,989.13 mi (6,419.88 km) |
| Penafiel to Oregon City (Oregon) | 5,214.38 mi (8,391.74 km) |
| Penafiel to Orem (Utah) | 5,041.46 mi (8,113.45 km) |
| Penafiel to Orinda (California) | 5,566.36 mi (8,958.19 km) |
| Penafiel to Orland Park (Illinois) | 3,963.94 mi (6,379.34 km) |
| Penafiel to Orlando (Florida) | 4,114.11 mi (6,621.02 km) |
| Penafiel to Ormond Beach (Florida) | 4,071.13 mi (6,551.86 km) |
| Penafiel to Oro Valley (Arizona) | 5,366.05 mi (8,635.83 km) |
| Penafiel to Oroville (California) | 5,463.27 mi (8,792.29 km) |
| Penafiel to Oshkosh (Wisconsin) | 3,916.93 mi (6,303.69 km) |
| Penafiel to Oskaloosa (Iowa) | 4,189.75 mi (6,742.75 km) |
