| Johnston to Cosham | 4,173.54 mi (6,716.67 km) |
| Johnston to Costessey | 4,192.06 mi (6,746.48 km) |
| Johnston to Cottingham | 4,094.56 mi (6,589.55 km) |
| Johnston to Coulsdon | 4,190.94 mi (6,744.67 km) |
| Johnston to Coventry | 4,102.35 mi (6,602.10 km) |
| Johnston to Cowdenbeath | 3,915.79 mi (6,301.85 km) |
| Johnston to Cowes | 4,167.70 mi (6,707.27 km) |
| Johnston to Cowley | 4,170.93 mi (6,712.46 km) |
| Johnston to Cowley | 4,136.63 mi (6,657.26 km) |
| Johnston to Cramlington | 4,009.72 mi (6,453.02 km) |
| Johnston to Cranleigh | 4,184.98 mi (6,735.07 km) |
| Johnston to Crawley | 4,196.75 mi (6,754.01 km) |
| Johnston to Crayford | 4,198.13 mi (6,756.23 km) |
| Johnston to Crewe | 4,045.06 mi (6,509.89 km) |
| Johnston to Crigglestone | 4,059.81 mi (6,533.63 km) |
