| Michigan City to Oberkirch | 4,344.39 mi (6,991.62 km) |
| Michigan City to Obernburg am Main | 4,334.69 mi (6,976.01 km) |
| Michigan City to Obernkirchen | 4,242.96 mi (6,828.39 km) |
| Michigan City to Oberschleissheim | 4,487.37 mi (7,221.72 km) |
| Michigan City to Oberstdorf | 4,472.03 mi (7,197.03 km) |
| Michigan City to Obertraubling | 4,481.04 mi (7,211.53 km) |
| Michigan City to Obertshausen | 4,314.65 mi (6,943.76 km) |
| Michigan City to Oberursel | 4,299.99 mi (6,920.16 km) |
| Michigan City to Ochsenfurt | 4,376.35 mi (7,043.06 km) |
| Michigan City to Ochsenhausen | 4,433.28 mi (7,134.68 km) |
| Michigan City to Ochtrup | 4,175.77 mi (6,720.26 km) |
| Michigan City to Odenthal | 4,215.25 mi (6,783.79 km) |
| Michigan City to Oelde | 4,224.01 mi (6,797.88 km) |
| Michigan City to Oelsnitz | 4,423.26 mi (7,118.55 km) |
| Michigan City to Oer-Erkenschwick | 4,198.19 mi (6,756.33 km) |
