| Holbrook to Nuth | 3,677.86 mi (5,918.94 km) |
| Holbrook to Oegstgeest | 3,589.62 mi (5,776.93 km) |
| Holbrook to Oirschot | 3,639.57 mi (5,857.32 km) |
| Holbrook to Oisterwijk | 3,633.48 mi (5,847.53 km) |
| Holbrook to Oldebroek | 3,639.85 mi (5,857.78 km) |
| Holbrook to Oldenzaal | 3,683.81 mi (5,928.51 km) |
| Holbrook to Ommen | 3,658.50 mi (5,887.78 km) |
| Holbrook to Oosterend | 3,632.83 mi (5,846.47 km) |
| Holbrook to Oosterhout | 3,618.26 mi (5,823.02 km) |
| Holbrook to Oosterwolde | 3,641.91 mi (5,861.08 km) |
| Holbrook to Oostzaan | 3,600.17 mi (5,793.91 km) |
| Holbrook to Opmeer | 3,596.44 mi (5,787.91 km) |
| Holbrook to Oss | 3,641.58 mi (5,860.56 km) |
| Holbrook to Oud-Beijerland | 3,595.74 mi (5,786.78 km) |
| Holbrook to Oudenbosch | 3,606.21 mi (5,803.64 km) |
