| Guarda to Nuth | 956.84 mi (1,539.88 km) |
| Guarda to Oegstgeest | 979.41 mi (1,576.21 km) |
| Guarda to Oirschot | 967.51 mi (1,557.05 km) |
| Guarda to Oisterwijk | 968.77 mi (1,559.08 km) |
| Guarda to Oldebroek | 1,032.98 mi (1,662.42 km) |
| Guarda to Oldenzaal | 1,056.52 mi (1,700.30 km) |
| Guarda to Ommen | 1,051.17 mi (1,691.69 km) |
| Guarda to Oosterend | 1,066.09 mi (1,715.71 km) |
| Guarda to Oosterhout | 961.90 mi (1,548.03 km) |
| Guarda to Oosterwolde | 1,071.64 mi (1,724.63 km) |
| Guarda to Oostzaan | 1,003.94 mi (1,615.68 km) |
| Guarda to Opmeer | 1,019.92 mi (1,641.40 km) |
| Guarda to Oss | 987.29 mi (1,588.89 km) |
| Guarda to Oud-Beijerland | 958.13 mi (1,541.96 km) |
| Guarda to Oudenbosch | 949.65 mi (1,528.31 km) |
