| Ponte da Barca to Nuth | 925.34 mi (1,489.20 km) |
| Ponte da Barca to Oegstgeest | 937.03 mi (1,508.01 km) |
| Ponte da Barca to Oirschot | 931.09 mi (1,498.45 km) |
| Ponte da Barca to Oisterwijk | 931.61 mi (1,499.29 km) |
| Ponte da Barca to Oldebroek | 993.65 mi (1,599.12 km) |
| Ponte da Barca to Oldenzaal | 1,020.69 mi (1,642.64 km) |
| Ponte da Barca to Ommen | 1,012.97 mi (1,630.22 km) |
| Ponte da Barca to Oosterend | 1,024.69 mi (1,649.08 km) |
| Ponte da Barca to Oosterhout | 923.37 mi (1,486.02 km) |
| Ponte da Barca to Oosterwolde | 1,030.91 mi (1,659.09 km) |
| Ponte da Barca to Oostzaan | 961.69 mi (1,547.69 km) |
| Ponte da Barca to Opmeer | 976.67 mi (1,571.79 km) |
| Ponte da Barca to Oss | 950.17 mi (1,529.15 km) |
| Ponte da Barca to Oud-Beijerland | 917.28 mi (1,476.22 km) |
| Ponte da Barca to Oudenbosch | 910.33 mi (1,465.03 km) |
