| Chicago to Oschatz | 4,444.16 mi (7,152.18 km) |
| Chicago to Oschersleben | 4,350.56 mi (7,001.55 km) |
| Chicago to Osnabruck | 4,227.01 mi (6,802.72 km) |
| Chicago to Ostbevern | 4,228.69 mi (6,805.42 km) |
| Chicago to Osterburg | 4,338.73 mi (6,982.51 km) |
| Chicago to Ostercappeln | 4,231.10 mi (6,809.30 km) |
| Chicago to Osterhofen | 4,546.99 mi (7,317.67 km) |
| Chicago to Osterholz-Scharmbeck | 4,219.16 mi (6,790.08 km) |
| Chicago to Osternienburg | 4,385.97 mi (7,058.54 km) |
| Chicago to Osterode | 4,326.43 mi (6,962.72 km) |
| Chicago to Osterwieck | 4,333.72 mi (6,974.45 km) |
| Chicago to Ostfildern | 4,405.90 mi (7,090.61 km) |
| Chicago to Osthofen | 4,333.79 mi (6,974.56 km) |
| Chicago to Ostrhauderfehn | 4,181.20 mi (6,728.99 km) |
| Chicago to Ostringen | 4,366.79 mi (7,027.67 km) |
