| Happy Valley to Nuth | 5,101.94 mi (8,210.78 km) |
| Happy Valley to Oegstgeest | 4,995.36 mi (8,039.25 km) |
| Happy Valley to Oirschot | 5,054.45 mi (8,134.36 km) |
| Happy Valley to Oisterwijk | 5,047.27 mi (8,122.80 km) |
| Happy Valley to Oldebroek | 5,015.63 mi (8,071.88 km) |
| Happy Valley to Oldenzaal | 5,048.09 mi (8,124.12 km) |
| Happy Valley to Ommen | 5,024.34 mi (8,085.89 km) |
| Happy Valley to Oosterend | 4,988.38 mi (8,028.03 km) |
| Happy Valley to Oosterhout | 5,035.35 mi (8,103.61 km) |
| Happy Valley to Oosterwolde | 4,994.52 mi (8,037.90 km) |
| Happy Valley to Oostzaan | 4,991.70 mi (8,033.37 km) |
| Happy Valley to Opmeer | 4,978.40 mi (8,011.96 km) |
| Happy Valley to Oss | 5,044.80 mi (8,118.82 km) |
| Happy Valley to Oud-Beijerland | 5,014.17 mi (8,069.53 km) |
| Happy Valley to Oudenbosch | 5,030.01 mi (8,095.02 km) |
