| Mason City to Carterton | 4,032.83 mi (6,490.22 km) |
| Mason City to Castle Bromwich | 3,999.34 mi (6,436.32 km) |
| Mason City to Castleford | 3,972.43 mi (6,393.01 km) |
| Mason City to Castleton | 3,947.74 mi (6,353.27 km) |
| Mason City to Caterham | 4,105.43 mi (6,607.05 km) |
| Mason City to Catford | 4,101.59 mi (6,600.87 km) |
| Mason City to Caversham | 4,065.97 mi (6,543.55 km) |
| Mason City to Chaddesden | 3,996.93 mi (6,432.44 km) |
| Mason City to Chalfont Saint Peter | 4,076.15 mi (6,559.92 km) |
| Mason City to Chandlers Ford | 4,068.48 mi (6,547.59 km) |
| Mason City to Chapel en le Frith | 3,966.14 mi (6,382.89 km) |
| Mason City to Chapeltown | 3,977.36 mi (6,400.94 km) |
| Mason City to Chard | 4,013.60 mi (6,459.27 km) |
| Mason City to Charlton Kings | 4,011.77 mi (6,456.31 km) |
| Mason City to Chatham | 4,124.06 mi (6,637.03 km) |
