| Olesa de Montserrat to Nuth | 674.74 mi (1,085.89 km) |
| Olesa de Montserrat to Oegstgeest | 744.89 mi (1,198.78 km) |
| Olesa de Montserrat to Oirschot | 706.42 mi (1,136.87 km) |
| Olesa de Montserrat to Oisterwijk | 710.94 mi (1,144.14 km) |
| Olesa de Montserrat to Oldebroek | 776.43 mi (1,249.55 km) |
| Olesa de Montserrat to Oldenzaal | 780.82 mi (1,256.60 km) |
| Olesa de Montserrat to Ommen | 787.02 mi (1,266.58 km) |
| Olesa de Montserrat to Oosterend | 815.15 mi (1,311.86 km) |
| Olesa de Montserrat to Oosterhout | 711.59 mi (1,145.19 km) |
| Olesa de Montserrat to Oosterwolde | 816.82 mi (1,314.55 km) |
| Olesa de Montserrat to Oostzaan | 765.21 mi (1,231.48 km) |
| Olesa de Montserrat to Opmeer | 783.82 mi (1,261.44 km) |
| Olesa de Montserrat to Oss | 726.60 mi (1,169.36 km) |
| Olesa de Montserrat to Oud-Beijerland | 719.46 mi (1,157.86 km) |
| Olesa de Montserrat to Oudenbosch | 705.01 mi (1,134.61 km) |
