| Palos Heights to Orbetello | 4,750.92 mi (7,645.87 km) |
| Palos Heights to Oria | 5,092.48 mi (8,195.55 km) |
| Palos Heights to Oristano | 4,749.03 mi (7,642.82 km) |
| Palos Heights to Orta Nova | 4,979.02 mi (8,012.95 km) |
| Palos Heights to Orte | 4,797.21 mi (7,720.36 km) |
| Palos Heights to Ortona | 4,882.09 mi (7,856.96 km) |
| Palos Heights to Orvieto | 4,775.17 mi (7,684.89 km) |
| Palos Heights to Orzinuovi | 4,577.30 mi (7,366.45 km) |
| Palos Heights to Osimo | 4,796.82 mi (7,719.73 km) |
| Palos Heights to Ospitaletto | 4,576.47 mi (7,365.12 km) |
| Palos Heights to Ostuni | 5,079.86 mi (8,175.25 km) |
| Palos Heights to Ottaviano | 4,951.12 mi (7,968.06 km) |
| Palos Heights to Ovada | 4,557.10 mi (7,333.94 km) |
| Palos Heights to Ozieri | 4,737.97 mi (7,625.03 km) |
| Palos Heights to Paceco | 4,998.22 mi (8,043.85 km) |
