| Efkarpia to Orangevale (California) | 6,505.39 mi (10,469.41 km) |
| Efkarpia to Orchards (Washington) | 6,099.64 mi (9,816.42 km) |
| Efkarpia to Orcutt (California) | 6,721.05 mi (10,816.49 km) |
| Efkarpia to Oregon (Ohio) | 5,121.97 mi (8,243.01 km) |
| Efkarpia to Oregon (Wisconsin) | 5,287.85 mi (8,509.97 km) |
| Efkarpia to Oregon City (Oregon) | 6,122.59 mi (9,853.35 km) |
| Efkarpia to Orem (Utah) | 6,158.40 mi (9,910.99 km) |
| Efkarpia to Orinda (California) | 6,578.34 mi (10,586.82 km) |
| Efkarpia to Orland Park (Illinois) | 5,293.95 mi (8,519.78 km) |
| Efkarpia to Orlando (Florida) | 5,637.04 mi (9,071.94 km) |
| Efkarpia to Ormond Beach (Florida) | 5,588.52 mi (8,993.86 km) |
| Efkarpia to Oro Valley (Arizona) | 6,593.40 mi (10,611.06 km) |
| Efkarpia to Oroville (California) | 6,463.24 mi (10,401.58 km) |
| Efkarpia to Oshkosh (Wisconsin) | 5,205.56 mi (8,377.54 km) |
| Efkarpia to Oskaloosa (Iowa) | 5,485.53 mi (8,828.11 km) |
