| Chicago Heights to Ondokuzmayis | 5,711.14 mi (9,191.20 km) |
| Chicago Heights to Ordu | 5,797.01 mi (9,329.39 km) |
| Chicago Heights to Ortahisar | 5,824.58 mi (9,373.75 km) |
| Chicago Heights to Ortakent | 5,629.96 mi (9,060.55 km) |
| Chicago Heights to Ortaklar | 5,598.59 mi (9,010.06 km) |
| Chicago Heights to Ortakoy | 5,789.96 mi (9,318.04 km) |
| Chicago Heights to Ortakoy | 5,749.36 mi (9,252.70 km) |
| Chicago Heights to Osmaneli | 5,565.21 mi (8,956.35 km) |
| Chicago Heights to Osmaniye | 5,955.15 mi (9,583.88 km) |
| Chicago Heights to Ozdere | 5,577.93 mi (8,976.81 km) |
| Chicago Heights to Palu | 5,988.77 mi (9,638.00 km) |
| Chicago Heights to Pamukkale | 5,656.92 mi (9,103.93 km) |
| Chicago Heights to Patnos | 6,050.15 mi (9,736.78 km) |
| Chicago Heights to Pazar | 5,785.18 mi (9,310.34 km) |
| Chicago Heights to Pazarcik | 5,968.48 mi (9,605.34 km) |
