| Otopeni to Nuth | 1,031.67 mi (1,660.31 km) |
| Otopeni to Oegstgeest | 1,117.16 mi (1,797.89 km) |
| Otopeni to Oirschot | 1,068.11 mi (1,718.96 km) |
| Otopeni to Oisterwijk | 1,074.02 mi (1,728.47 km) |
| Otopeni to Oldebroek | 1,067.33 mi (1,717.70 km) |
| Otopeni to Oldenzaal | 1,023.67 mi (1,647.44 km) |
| Otopeni to Ommen | 1,049.17 mi (1,688.48 km) |
| Otopeni to Oosterend | 1,076.36 mi (1,732.24 km) |
| Otopeni to Oosterhout | 1,089.29 mi (1,753.05 km) |
| Otopeni to Oosterwolde | 1,067.50 mi (1,717.97 km) |
| Otopeni to Oostzaan | 1,106.64 mi (1,780.97 km) |
| Otopeni to Opmeer | 1,110.79 mi (1,787.64 km) |
| Otopeni to Oss | 1,065.38 mi (1,714.57 km) |
| Otopeni to Oud-Beijerland | 1,111.63 mi (1,788.99 km) |
| Otopeni to Oudenbosch | 1,101.73 mi (1,773.06 km) |
