| Fort Madison to Oxford (Alabama) | 571.35 mi (919.50 km) |
| Fort Madison to Oxford (Mississippi) | 443.68 mi (714.04 km) |
| Fort Madison to Oxford (Ohio) | 357.63 mi (575.55 km) |
| Fort Madison to Oxnard (California) | 1,583.08 mi (2,547.72 km) |
| Fort Madison to Oxon Hill (Maryland) | 773.81 mi (1,245.32 km) |
| Fort Madison to Ozark (Alabama) | 708.79 mi (1,140.69 km) |
| Fort Madison to Ozark (Missouri) | 267.20 mi (430.01 km) |
| Fort Madison to Pace (Florida) | 729.68 mi (1,174.31 km) |
| Fort Madison to Pacific Grove (California) | 1,664.91 mi (2,679.42 km) |
| Fort Madison to Pacifica (California) | 1,672.75 mi (2,692.03 km) |
| Fort Madison to Paducah (Kentucky) | 285.21 mi (459.00 km) |
| Fort Madison to Pahrump (Nevada) | 1,363.47 mi (2,194.29 km) |
| Fort Madison to Painesville (Ohio) | 530.33 mi (853.49 km) |
| Fort Madison to Palatine (Illinois) | 200.28 mi (322.32 km) |
| Fort Madison to Palatka (Florida) | 933.44 mi (1,502.23 km) |
