| Kopavogur to Oegstgeest | 1,250.28 mi (2,012.13 km) |
| Kopavogur to Oirschot | 1,309.38 mi (2,107.24 km) |
| Kopavogur to Oisterwijk | 1,302.20 mi (2,095.68 km) |
| Kopavogur to Oldebroek | 1,274.43 mi (2,051.00 km) |
| Kopavogur to Oldenzaal | 1,309.62 mi (2,107.63 km) |
| Kopavogur to Ommen | 1,284.98 mi (2,067.98 km) |
| Kopavogur to Oosterend | 1,249.96 mi (2,011.62 km) |
| Kopavogur to Oosterhout | 1,289.88 mi (2,075.87 km) |
| Kopavogur to Oosterwolde | 1,256.83 mi (2,022.67 km) |
| Kopavogur to Oostzaan | 1,247.94 mi (2,008.37 km) |
| Kopavogur to Opmeer | 1,235.55 mi (1,988.43 km) |
| Kopavogur to Oss | 1,300.66 mi (2,093.21 km) |
| Kopavogur to Oud-Beijerland | 1,268.41 mi (2,041.30 km) |
| Kopavogur to Oudenbosch | 1,284.08 mi (2,066.53 km) |
| Kopavogur to Oudewater | 1,269.87 mi (2,043.66 km) |
