| Johnston to Caldicot | 4,084.56 mi (6,573.47 km) |
| Johnston to Calne | 4,117.58 mi (6,626.61 km) |
| Johnston to Cam | 4,095.15 mi (6,590.51 km) |
| Johnston to Camberley | 4,168.13 mi (6,707.96 km) |
| Johnston to Camborne | 4,033.87 mi (6,491.88 km) |
| Johnston to Cambridge | 4,168.82 mi (6,709.06 km) |
| Johnston to Cambuslang | 3,896.47 mi (6,270.76 km) |
| Johnston to Canford Cliffs | 4,146.10 mi (6,672.51 km) |
| Johnston to Cannock | 4,073.83 mi (6,556.19 km) |
| Johnston to Canterbury | 4,237.26 mi (6,819.21 km) |
| Johnston to Carlisle | 3,968.36 mi (6,386.45 km) |
| Johnston to Carlton Colville | 4,216.52 mi (6,785.84 km) |
| Johnston to Carluke | 3,910.67 mi (6,293.62 km) |
| Johnston to Carnoustie | 3,925.53 mi (6,317.53 km) |
| Johnston to Carshalton | 4,188.29 mi (6,740.40 km) |
