| Guardamar del Segura to Nuth | 942.08 mi (1,516.13 km) |
| Guardamar del Segura to Oegstgeest | 1,004.62 mi (1,616.78 km) |
| Guardamar del Segura to Oirschot | 970.66 mi (1,562.13 km) |
| Guardamar del Segura to Oisterwijk | 974.66 mi (1,568.56 km) |
| Guardamar del Segura to Oldebroek | 1,041.07 mi (1,675.45 km) |
| Guardamar del Segura to Oldenzaal | 1,048.71 mi (1,687.74 km) |
| Guardamar del Segura to Ommen | 1,053.14 mi (1,694.87 km) |
| Guardamar del Segura to Oosterend | 1,079.39 mi (1,737.10 km) |
| Guardamar del Segura to Oosterhout | 973.86 mi (1,567.28 km) |
| Guardamar del Segura to Oosterwolde | 1,081.78 mi (1,740.95 km) |
| Guardamar del Segura to Oostzaan | 1,026.23 mi (1,651.56 km) |
| Guardamar del Segura to Opmeer | 1,044.66 mi (1,681.22 km) |
| Guardamar del Segura to Oss | 991.15 mi (1,595.10 km) |
| Guardamar del Segura to Oud-Beijerland | 979.51 mi (1,576.38 km) |
| Guardamar del Segura to Oudenbosch | 966.00 mi (1,554.62 km) |
