| Efkarpia to Oegstgeest | 1,179.51 mi (1,898.24 km) |
| Efkarpia to Oirschot | 1,123.32 mi (1,807.81 km) |
| Efkarpia to Oisterwijk | 1,130.13 mi (1,818.77 km) |
| Efkarpia to Oldebroek | 1,142.07 mi (1,837.99 km) |
| Efkarpia to Oldenzaal | 1,102.60 mi (1,774.46 km) |
| Efkarpia to Ommen | 1,128.15 mi (1,815.58 km) |
| Efkarpia to Oosterend | 1,161.03 mi (1,868.49 km) |
| Efkarpia to Oosterhout | 1,144.60 mi (1,842.06 km) |
| Efkarpia to Oosterwolde | 1,153.32 mi (1,856.09 km) |
| Efkarpia to Oostzaan | 1,175.32 mi (1,891.50 km) |
| Efkarpia to Opmeer | 1,184.15 mi (1,905.70 km) |
| Efkarpia to Oss | 1,126.41 mi (1,812.79 km) |
| Efkarpia to Oud-Beijerland | 1,167.52 mi (1,878.93 km) |
| Efkarpia to Oudenbosch | 1,154.38 mi (1,857.79 km) |
| Efkarpia to Oudewater | 1,159.00 mi (1,865.23 km) |
