| Glenmont to Nuth | 3,915.44 mi (6,301.29 km) |
| Glenmont to Oegstgeest | 3,826.31 mi (6,157.85 km) |
| Glenmont to Oirschot | 3,876.74 mi (6,239.01 km) |
| Glenmont to Oisterwijk | 3,870.60 mi (6,229.13 km) |
| Glenmont to Oldebroek | 3,875.92 mi (6,237.69 km) |
| Glenmont to Oldenzaal | 3,919.74 mi (6,308.22 km) |
| Glenmont to Ommen | 3,894.36 mi (6,267.36 km) |
| Glenmont to Oosterend | 3,868.24 mi (6,225.33 km) |
| Glenmont to Oosterhout | 3,855.40 mi (6,204.67 km) |
| Glenmont to Oosterwolde | 3,877.28 mi (6,239.87 km) |
| Glenmont to Oostzaan | 3,836.50 mi (6,174.25 km) |
| Glenmont to Opmeer | 3,832.47 mi (6,167.77 km) |
| Glenmont to Oss | 3,878.45 mi (6,241.76 km) |
| Glenmont to Oud-Beijerland | 3,832.81 mi (6,168.32 km) |
| Glenmont to Oudenbosch | 3,843.48 mi (6,185.49 km) |
