| Johnston to Cromer | 4,185.38 mi (6,735.72 km) |
| Johnston to Crosby | 4,010.66 mi (6,454.53 km) |
| Johnston to Crowborough | 4,211.38 mi (6,777.56 km) |
| Johnston to Croxley Green | 4,168.03 mi (6,707.79 km) |
| Johnston to Croydon | 4,190.15 mi (6,743.40 km) |
| Johnston to Cudworth | 4,065.87 mi (6,543.39 km) |
| Johnston to Culcheth | 4,030.35 mi (6,486.22 km) |
| Johnston to Cullercoats | 4,016.62 mi (6,464.13 km) |
| Johnston to Cumbernauld | 3,898.62 mi (6,274.22 km) |
| Johnston to Cumnock | 3,904.32 mi (6,283.40 km) |
| Johnston to Cupar | 3,920.94 mi (6,310.14 km) |
| Johnston to Cwmbran | 4,072.30 mi (6,553.74 km) |
| Johnston to Dagenham | 4,193.44 mi (6,748.69 km) |
| Johnston to Dalkeith | 3,932.52 mi (6,328.78 km) |
| Johnston to Darfield | 4,068.45 mi (6,547.53 km) |
