| Middle Valley to Nuth | 4,425.35 mi (7,121.91 km) |
| Middle Valley to Oegstgeest | 4,334.24 mi (6,975.29 km) |
| Middle Valley to Oirschot | 4,385.73 mi (7,058.16 km) |
| Middle Valley to Oisterwijk | 4,379.47 mi (7,048.07 km) |
| Middle Valley to Oldebroek | 4,382.36 mi (7,052.73 km) |
| Middle Valley to Oldenzaal | 4,425.85 mi (7,122.72 km) |
| Middle Valley to Ommen | 4,400.31 mi (7,081.62 km) |
| Middle Valley to Oosterend | 4,373.22 mi (7,038.01 km) |
| Middle Valley to Oosterhout | 4,364.33 mi (7,023.71 km) |
| Middle Valley to Oosterwolde | 4,382.14 mi (7,052.38 km) |
| Middle Valley to Oostzaan | 4,343.60 mi (6,990.35 km) |
| Middle Valley to Opmeer | 4,338.89 mi (6,982.77 km) |
| Middle Valley to Oss | 4,386.72 mi (7,059.74 km) |
| Middle Valley to Oud-Beijerland | 4,341.62 mi (6,987.16 km) |
| Middle Valley to Oudenbosch | 4,352.73 mi (7,005.04 km) |
