| Prospect Heights to Ondokuzmayis | 5,688.63 mi (9,154.97 km) |
| Prospect Heights to Ordu | 5,774.00 mi (9,292.36 km) |
| Prospect Heights to Ortahisar | 5,803.75 mi (9,340.23 km) |
| Prospect Heights to Ortakent | 5,612.94 mi (9,033.16 km) |
| Prospect Heights to Ortaklar | 5,581.11 mi (8,981.92 km) |
| Prospect Heights to Ortakoy | 5,769.42 mi (9,284.98 km) |
| Prospect Heights to Ortakoy | 5,727.67 mi (9,217.79 km) |
| Prospect Heights to Osmaneli | 5,545.56 mi (8,924.72 km) |
| Prospect Heights to Osmaniye | 5,934.39 mi (9,550.48 km) |
| Prospect Heights to Ozdere | 5,560.53 mi (8,948.81 km) |
| Prospect Heights to Palu | 5,965.83 mi (9,601.07 km) |
| Prospect Heights to Pamukkale | 5,638.76 mi (9,074.70 km) |
| Prospect Heights to Patnos | 6,025.82 mi (9,697.63 km) |
| Prospect Heights to Pazar | 5,763.08 mi (9,274.78 km) |
| Prospect Heights to Pazarcik | 5,947.12 mi (9,570.96 km) |
