| Glenpool to Nuth | 4,800.52 mi (7,725.69 km) |
| Glenpool to Oegstgeest | 4,702.85 mi (7,568.51 km) |
| Glenpool to Oirschot | 4,757.77 mi (7,656.89 km) |
| Glenpool to Oisterwijk | 4,751.09 mi (7,646.14 km) |
| Glenpool to Oldebroek | 4,744.99 mi (7,636.33 km) |
| Glenpool to Oldenzaal | 4,786.80 mi (7,703.61 km) |
| Glenpool to Ommen | 4,761.01 mi (7,662.11 km) |
| Glenpool to Oosterend | 4,730.81 mi (7,613.50 km) |
| Glenpool to Oosterhout | 4,736.38 mi (7,622.46 km) |
| Glenpool to Oosterwolde | 4,739.25 mi (7,627.08 km) |
| Glenpool to Oostzaan | 4,709.05 mi (7,578.49 km) |
| Glenpool to Opmeer | 4,701.95 mi (7,567.05 km) |
| Glenpool to Oss | 4,755.99 mi (7,654.03 km) |
| Glenpool to Oud-Beijerland | 4,713.44 mi (7,585.55 km) |
| Glenpool to Oudenbosch | 4,726.09 mi (7,605.91 km) |
