| Fort Madison to Nuth | 4,392.26 mi (7,068.66 km) |
| Fort Madison to Oegstgeest | 4,294.23 mi (6,910.90 km) |
| Fort Madison to Oirschot | 4,349.33 mi (6,999.56 km) |
| Fort Madison to Oisterwijk | 4,342.63 mi (6,988.78 km) |
| Fort Madison to Oldebroek | 4,336.03 mi (6,978.16 km) |
| Fort Madison to Oldenzaal | 4,377.74 mi (7,045.28 km) |
| Fort Madison to Ommen | 4,351.95 mi (7,003.79 km) |
| Fort Madison to Oosterend | 4,321.63 mi (6,954.99 km) |
| Fort Madison to Oosterhout | 4,327.95 mi (6,965.16 km) |
| Fort Madison to Oosterwolde | 4,330.05 mi (6,968.54 km) |
| Fort Madison to Oostzaan | 4,300.25 mi (6,920.58 km) |
| Fort Madison to Opmeer | 4,293.02 mi (6,908.95 km) |
| Fort Madison to Oss | 4,347.38 mi (6,996.43 km) |
| Fort Madison to Oud-Beijerland | 4,305.01 mi (6,928.25 km) |
| Fort Madison to Oudenbosch | 4,317.76 mi (6,948.76 km) |
