| Mason City to Chenove | 4,450.46 mi (7,162.32 km) |
| Mason City to Cherbourg | 4,109.49 mi (6,613.59 km) |
| Mason City to Chevigny-Saint-Sauveur | 4,454.84 mi (7,169.36 km) |
| Mason City to Chevilly-Larue | 4,291.39 mi (6,906.33 km) |
| Mason City to Chilly-Mazarin | 4,292.38 mi (6,907.92 km) |
| Mason City to Choisy-le-Roi | 4,293.61 mi (6,909.90 km) |
| Mason City to Cholet | 4,234.06 mi (6,814.06 km) |
| Mason City to Clamart | 4,286.63 mi (6,898.66 km) |
| Mason City to Claye-Souilly | 4,296.79 mi (6,915.02 km) |
| Mason City to Clermont | 4,269.54 mi (6,871.16 km) |
| Mason City to Clermont-Ferrand | 4,439.11 mi (7,144.05 km) |
| Mason City to Clermont-l'Herault | 4,542.22 mi (7,310.00 km) |
| Mason City to Clichy | 4,284.21 mi (6,894.77 km) |
| Mason City to Clichy-sous-Bois | 4,293.19 mi (6,909.22 km) |
| Mason City to Cluses | 4,561.31 mi (7,340.72 km) |
