| Johnston to Cognac | 4,392.27 mi (7,068.67 km) |
| Johnston to Cogolin | 4,765.04 mi (7,668.59 km) |
| Johnston to Colmar | 4,593.43 mi (7,392.41 km) |
| Johnston to Colombes | 4,369.24 mi (7,031.61 km) |
| Johnston to Colomiers | 4,541.20 mi (7,308.36 km) |
| Johnston to Combs-la-Ville | 4,390.63 mi (7,066.04 km) |
| Johnston to Comines | 4,327.14 mi (6,963.85 km) |
| Johnston to Compiegne | 4,371.80 mi (7,035.73 km) |
| Johnston to Concarneau | 4,168.35 mi (6,708.31 km) |
| Johnston to Conde-sur-l'Escaut | 4,360.35 mi (7,017.30 km) |
| Johnston to Conflans-Sainte-Honorine | 4,360.53 mi (7,017.59 km) |
| Johnston to Corbas | 4,600.11 mi (7,403.16 km) |
| Johnston to Corbeil-Essonnes | 4,389.85 mi (7,064.77 km) |
| Johnston to Cormeilles-en-Parisis | 4,365.39 mi (7,025.42 km) |
| Johnston to Cosne sur Loire | 4,453.67 mi (7,167.49 km) |
