| Glenpool to Orbetello | 5,343.08 mi (8,598.85 km) |
| Glenpool to Oria | 5,684.56 mi (9,148.42 km) |
| Glenpool to Oristano | 5,339.82 mi (8,593.61 km) |
| Glenpool to Orta Nova | 5,571.15 mi (8,965.91 km) |
| Glenpool to Orte | 5,389.40 mi (8,673.39 km) |
| Glenpool to Ortona | 5,474.20 mi (8,809.88 km) |
| Glenpool to Orvieto | 5,367.35 mi (8,637.92 km) |
| Glenpool to Orzinuovi | 5,169.32 mi (8,319.21 km) |
| Glenpool to Osimo | 5,388.83 mi (8,672.49 km) |
| Glenpool to Ospitaletto | 5,168.44 mi (8,317.80 km) |
| Glenpool to Ostuni | 5,671.92 mi (9,128.07 km) |
| Glenpool to Ottaviano | 5,543.30 mi (8,921.08 km) |
| Glenpool to Ovada | 5,149.28 mi (8,286.97 km) |
| Glenpool to Ozieri | 5,329.26 mi (8,576.61 km) |
| Glenpool to Paceco | 5,589.28 mi (8,995.07 km) |
