| Chicago to Oststeinbek | 4,254.42 mi (6,846.83 km) |
| Chicago to Ottendorf-Okrilla | 4,474.24 mi (7,200.60 km) |
| Chicago to Ottersberg | 4,235.73 mi (6,816.74 km) |
| Chicago to Ottobrunn | 4,522.99 mi (7,279.05 km) |
| Chicago to Ottweiler | 4,303.14 mi (6,925.24 km) |
| Chicago to Overath | 4,249.02 mi (6,838.14 km) |
| Chicago to Oyten | 4,232.54 mi (6,811.61 km) |
| Chicago to Paderborn | 4,273.27 mi (6,877.17 km) |
| Chicago to Papenburg | 4,175.33 mi (6,719.55 km) |
| Chicago to Parchim | 4,316.44 mi (6,946.64 km) |
| Chicago to Pasewalk | 4,386.43 mi (7,059.28 km) |
| Chicago to Passau | 4,568.53 mi (7,352.33 km) |
| Chicago to Pattensen | 4,288.68 mi (6,901.96 km) |
| Chicago to Pegnitz | 4,450.32 mi (7,162.10 km) |
| Chicago to Peine | 4,303.11 mi (6,925.19 km) |
