| Alcobendas to Nuth | 850.15 mi (1,368.18 km) |
| Alcobendas to Oegstgeest | 891.49 mi (1,434.72 km) |
| Alcobendas to Oirschot | 869.09 mi (1,398.66 km) |
| Alcobendas to Oisterwijk | 871.62 mi (1,402.74 km) |
| Alcobendas to Oldebroek | 938.14 mi (1,509.79 km) |
| Alcobendas to Oldenzaal | 954.92 mi (1,536.79 km) |
| Alcobendas to Ommen | 953.87 mi (1,535.11 km) |
| Alcobendas to Oosterend | 974.25 mi (1,567.91 km) |
| Alcobendas to Oosterhout | 867.41 mi (1,395.96 km) |
| Alcobendas to Oosterwolde | 978.44 mi (1,574.64 km) |
| Alcobendas to Oostzaan | 915.14 mi (1,472.78 km) |
| Alcobendas to Opmeer | 932.59 mi (1,500.85 km) |
| Alcobendas to Oss | 889.61 mi (1,431.69 km) |
| Alcobendas to Oud-Beijerland | 867.96 mi (1,396.84 km) |
| Alcobendas to Oudenbosch | 856.93 mi (1,379.09 km) |
