| Mason City to Oststeinbek | 4,371.26 mi (7,034.86 km) |
| Mason City to Ottendorf-Okrilla | 4,594.00 mi (7,393.33 km) |
| Mason City to Ottersberg | 4,356.35 mi (7,010.86 km) |
| Mason City to Ottobrunn | 4,659.55 mi (7,498.82 km) |
| Mason City to Ottweiler | 4,443.36 mi (7,150.89 km) |
| Mason City to Overath | 4,382.32 mi (7,052.67 km) |
| Mason City to Oyten | 4,353.57 mi (7,006.40 km) |
| Mason City to Paderborn | 4,400.60 mi (7,082.07 km) |
| Mason City to Papenburg | 4,299.24 mi (6,918.97 km) |
| Mason City to Parchim | 4,430.74 mi (7,130.59 km) |
| Mason City to Pasewalk | 4,496.27 mi (7,236.05 km) |
| Mason City to Passau | 4,699.37 mi (7,562.91 km) |
| Mason City to Pattensen | 4,411.77 mi (7,100.06 km) |
| Mason City to Pegnitz | 4,580.41 mi (7,371.46 km) |
| Mason City to Peine | 4,425.10 mi (7,121.51 km) |
