| Overlea to Nuth | 3,880.74 mi (6,245.44 km) |
| Overlea to Oegstgeest | 3,791.67 mi (6,102.11 km) |
| Overlea to Oirschot | 3,842.07 mi (6,183.21 km) |
| Overlea to Oisterwijk | 3,835.93 mi (6,173.34 km) |
| Overlea to Oldebroek | 3,841.33 mi (6,182.03 km) |
| Overlea to Oldenzaal | 3,885.17 mi (6,252.58 km) |
| Overlea to Ommen | 3,859.79 mi (6,211.73 km) |
| Overlea to Oosterend | 3,833.71 mi (6,169.76 km) |
| Overlea to Oosterhout | 3,820.73 mi (6,148.87 km) |
| Overlea to Oosterwolde | 3,842.75 mi (6,184.31 km) |
| Overlea to Oostzaan | 3,801.89 mi (6,118.56 km) |
| Overlea to Opmeer | 3,797.89 mi (6,112.12 km) |
| Overlea to Oss | 3,843.80 mi (6,186.00 km) |
| Overlea to Oud-Beijerland | 3,798.15 mi (6,112.53 km) |
| Overlea to Oudenbosch | 3,808.80 mi (6,129.68 km) |
