| Efkarpia to Odessa (Texas) | 6,328.35 mi (10,184.49 km) |
| Efkarpia to Ogden (Utah) | 6,111.84 mi (9,836.05 km) |
| Efkarpia to Oildale (California) | 6,650.35 mi (10,702.70 km) |
| Efkarpia to Ojus (Florida) | 5,699.68 mi (9,172.74 km) |
| Efkarpia to Okemos (Michigan) | 5,112.14 mi (8,227.20 km) |
| Efkarpia to Oklahoma City (Oklahoma) | 5,960.41 mi (9,592.35 km) |
| Efkarpia to Okmulgee (Oklahoma) | 5,896.90 mi (9,490.14 km) |
| Efkarpia to Olathe (Kansas) | 5,685.63 mi (9,150.14 km) |
| Efkarpia to Old Jamestown (Missouri) | 5,518.80 mi (8,881.66 km) |
| Efkarpia to Oldsmar (Florida) | 5,716.87 mi (9,200.41 km) |
| Efkarpia to Olean (New York) | 4,904.61 mi (7,893.21 km) |
| Efkarpia to Olive Branch (Mississippi) | 5,691.37 mi (9,159.38 km) |
| Efkarpia to Olivehurst (California) | 6,489.15 mi (10,443.27 km) |
| Efkarpia to Olney (Maryland) | 4,973.99 mi (8,004.86 km) |
| Efkarpia to Olympia (Washington) | 6,022.63 mi (9,692.49 km) |
