| Johnston to Corato | 5,241.74 mi (8,435.76 km) |
| Johnston to Corbetta | 4,762.55 mi (7,664.59 km) |
| Johnston to Corciano | 4,993.64 mi (8,036.49 km) |
| Johnston to Cordenons | 4,880.34 mi (7,854.15 km) |
| Johnston to Cori | 5,085.80 mi (8,184.80 km) |
| Johnston to Coriano | 4,967.75 mi (7,994.83 km) |
| Johnston to Corigliano Calabro | 5,320.37 mi (8,562.31 km) |
| Johnston to Corleone | 5,278.89 mi (8,495.55 km) |
| Johnston to Cormano | 4,768.40 mi (7,673.99 km) |
| Johnston to Cornaredo | 4,765.52 mi (7,669.37 km) |
| Johnston to Cornate d'Adda | 4,775.36 mi (7,685.20 km) |
| Johnston to Cornedo Vicentino | 4,847.10 mi (7,800.66 km) |
| Johnston to Correggio | 4,863.42 mi (7,826.91 km) |
| Johnston to Corridonia | 5,034.90 mi (8,102.89 km) |
| Johnston to Corsico | 4,771.56 mi (7,679.08 km) |
