| Efkarpia to Oerlinghausen | 1,031.76 mi (1,660.45 km) |
| Efkarpia to Oestrich-Winkel | 967.08 mi (1,556.37 km) |
| Efkarpia to Offenburg | 911.38 mi (1,466.73 km) |
| Efkarpia to Oftersheim | 920.50 mi (1,481.40 km) |
| Efkarpia to Ohrdruf | 913.09 mi (1,469.48 km) |
| Efkarpia to Ohringen | 880.22 mi (1,416.57 km) |
| Efkarpia to Olbernhau | 829.96 mi (1,335.69 km) |
| Efkarpia to Olching | 772.44 mi (1,243.12 km) |
| Efkarpia to Oldenburg | 1,102.30 mi (1,773.98 km) |
| Efkarpia to Oldenburg in Holstein | 1,093.17 mi (1,759.29 km) |
| Efkarpia to Olfen | 1,061.25 mi (1,707.92 km) |
| Efkarpia to Olpe | 1,015.59 mi (1,634.44 km) |
| Efkarpia to Olsberg | 1,008.85 mi (1,623.59 km) |
| Efkarpia to Oranienburg | 950.57 mi (1,529.80 km) |
| Efkarpia to Ortenberg | 945.28 mi (1,521.28 km) |
