| Guimaraes to Nuth | 939.40 mi (1,511.82 km) |
| Guimaraes to Oegstgeest | 953.34 mi (1,534.25 km) |
| Guimaraes to Oirschot | 946.18 mi (1,522.73 km) |
| Guimaraes to Oisterwijk | 946.85 mi (1,523.82 km) |
| Guimaraes to Oldebroek | 1,009.38 mi (1,624.44 km) |
| Guimaraes to Oldenzaal | 1,035.73 mi (1,666.85 km) |
| Guimaraes to Ommen | 1,028.49 mi (1,655.19 km) |
| Guimaraes to Oosterend | 1,040.87 mi (1,675.11 km) |
| Guimaraes to Oosterhout | 938.89 mi (1,510.99 km) |
| Guimaraes to Oosterwolde | 1,046.96 mi (1,684.91 km) |
| Guimaraes to Oostzaan | 977.99 mi (1,573.92 km) |
| Guimaraes to Opmeer | 993.18 mi (1,598.37 km) |
| Guimaraes to Oss | 965.42 mi (1,553.69 km) |
| Guimaraes to Oud-Beijerland | 933.26 mi (1,501.94 km) |
| Guimaraes to Oudenbosch | 926.00 mi (1,490.25 km) |
