| Celtik to Nuth | 1,497.37 mi (2,409.79 km) |
| Celtik to Oegstgeest | 1,588.22 mi (2,556.00 km) |
| Celtik to Oirschot | 1,536.58 mi (2,472.89 km) |
| Celtik to Oisterwijk | 1,542.83 mi (2,482.94 km) |
| Celtik to Oldebroek | 1,541.41 mi (2,480.65 km) |
| Celtik to Oldenzaal | 1,498.46 mi (2,411.53 km) |
| Celtik to Ommen | 1,524.16 mi (2,452.89 km) |
| Celtik to Oosterend | 1,552.82 mi (2,499.02 km) |
| Celtik to Oosterhout | 1,557.97 mi (2,507.32 km) |
| Celtik to Oosterwolde | 1,544.14 mi (2,485.06 km) |
| Celtik to Oostzaan | 1,579.42 mi (2,541.82 km) |
| Celtik to Opmeer | 1,584.82 mi (2,550.53 km) |
| Celtik to Oss | 1,535.64 mi (2,471.38 km) |
| Celtik to Oud-Beijerland | 1,580.68 mi (2,543.85 km) |
| Celtik to Oudenbosch | 1,569.65 mi (2,526.11 km) |
