| Cat to Nuth | 1,854.26 mi (2,984.15 km) |
| Cat to Oegstgeest | 1,931.52 mi (3,108.49 km) |
| Cat to Oirschot | 1,886.99 mi (3,036.82 km) |
| Cat to Oisterwijk | 1,892.37 mi (3,045.47 km) |
| Cat to Oldebroek | 1,876.74 mi (3,020.32 km) |
| Cat to Oldenzaal | 1,832.24 mi (2,948.71 km) |
| Cat to Ommen | 1,856.83 mi (2,988.29 km) |
| Cat to Oosterend | 1,879.72 mi (3,025.12 km) |
| Cat to Oosterhout | 1,907.62 mi (3,070.01 km) |
| Cat to Oosterwolde | 1,870.46 mi (3,010.21 km) |
| Cat to Oostzaan | 1,918.10 mi (3,086.88 km) |
| Cat to Opmeer | 1,919.60 mi (3,089.30 km) |
| Cat to Oss | 1,881.74 mi (3,028.38 km) |
| Cat to Oud-Beijerland | 1,929.16 mi (3,104.68 km) |
| Cat to Oudenbosch | 1,920.90 mi (3,091.39 km) |
