| Efkarpia to Oberkirch | 907.85 mi (1,461.04 km) |
| Efkarpia to Obernburg am Main | 919.92 mi (1,480.46 km) |
| Efkarpia to Obernkirchen | 1,032.57 mi (1,661.75 km) |
| Efkarpia to Oberschleissheim | 765.57 mi (1,232.06 km) |
| Efkarpia to Oberstdorf | 780.67 mi (1,256.37 km) |
| Efkarpia to Obertraubling | 777.43 mi (1,251.15 km) |
| Efkarpia to Obertshausen | 940.37 mi (1,513.37 km) |
| Efkarpia to Oberursel | 955.13 mi (1,537.13 km) |
| Efkarpia to Ochsenfurt | 879.56 mi (1,415.51 km) |
| Efkarpia to Ochsenhausen | 818.43 mi (1,317.14 km) |
| Efkarpia to Ochtrup | 1,089.35 mi (1,753.14 km) |
| Efkarpia to Odenthal | 1,040.83 mi (1,675.06 km) |
| Efkarpia to Oelde | 1,041.71 mi (1,676.48 km) |
| Efkarpia to Oelsnitz | 849.35 mi (1,366.89 km) |
| Efkarpia to Oer-Erkenschwick | 1,062.35 mi (1,709.69 km) |
