| Fort Madison to Opole | 4,825.31 mi (7,765.59 km) |
| Fort Madison to Orzesze | 4,875.85 mi (7,846.92 km) |
| Fort Madison to Osowa | 4,676.07 mi (7,525.41 km) |
| Fort Madison to Ostroda | 4,754.83 mi (7,652.16 km) |
| Fort Madison to Ostroleka | 4,833.24 mi (7,778.35 km) |
| Fort Madison to Ostrow Mazowiecka | 4,855.89 mi (7,814.81 km) |
| Fort Madison to Ostrow Wielkopolski | 4,777.72 mi (7,689.00 km) |
| Fort Madison to Ostrowiec Swietokrzyski | 4,926.88 mi (7,929.04 km) |
| Fort Madison to Ostrzeszow | 4,791.90 mi (7,711.82 km) |
| Fort Madison to Oswiecim | 4,896.68 mi (7,880.44 km) |
| Fort Madison to Otwock | 4,867.75 mi (7,833.88 km) |
| Fort Madison to Ozarow Mazowiecki | 4,848.40 mi (7,802.74 km) |
| Fort Madison to Ozimek | 4,834.36 mi (7,780.16 km) |
| Fort Madison to Ozorkow | 4,811.32 mi (7,743.07 km) |
| Fort Madison to Pabianice | 4,828.85 mi (7,771.29 km) |
