| Union Hill-Novelty Hill to Nuth | 4,957.65 mi (7,978.56 km) |
| Union Hill-Novelty Hill to Oegstgeest | 4,851.06 mi (7,807.02 km) |
| Union Hill-Novelty Hill to Oirschot | 4,910.13 mi (7,902.08 km) |
| Union Hill-Novelty Hill to Oisterwijk | 4,902.95 mi (7,890.53 km) |
| Union Hill-Novelty Hill to Oldebroek | 4,870.38 mi (7,838.11 km) |
| Union Hill-Novelty Hill to Oldenzaal | 4,902.36 mi (7,889.58 km) |
| Union Hill-Novelty Hill to Ommen | 4,878.76 mi (7,851.61 km) |
| Union Hill-Novelty Hill to Oosterend | 4,842.70 mi (7,793.57 km) |
| Union Hill-Novelty Hill to Oosterhout | 4,891.18 mi (7,871.59 km) |
| Union Hill-Novelty Hill to Oosterwolde | 4,848.72 mi (7,803.27 km) |
| Union Hill-Novelty Hill to Oostzaan | 4,847.01 mi (7,800.51 km) |
| Union Hill-Novelty Hill to Opmeer | 4,833.50 mi (7,778.77 km) |
| Union Hill-Novelty Hill to Oss | 4,900.18 mi (7,886.08 km) |
| Union Hill-Novelty Hill to Oud-Beijerland | 4,870.15 mi (7,837.75 km) |
| Union Hill-Novelty Hill to Oudenbosch | 4,886.07 mi (7,863.36 km) |
