| Johnston to Carmona | 4,483.53 mi (7,215.55 km) |
| Johnston to Cartagena | 4,685.91 mi (7,541.24 km) |
| Johnston to Cartama | 4,558.70 mi (7,336.52 km) |
| Johnston to Cartaya | 4,421.81 mi (7,116.21 km) |
| Johnston to Caspe | 4,579.58 mi (7,370.11 km) |
| Johnston to Cassa de la Selva | 4,674.34 mi (7,522.63 km) |
| Johnston to Castalla | 4,658.84 mi (7,497.67 km) |
| Johnston to Castellbisbal | 4,654.33 mi (7,490.41 km) |
| Johnston to Castelldefels | 4,662.16 mi (7,503.03 km) |
| Johnston to Castello de Ampurias | 4,667.37 mi (7,511.41 km) |
| Johnston to Castellon de la Plana | 4,630.04 mi (7,451.32 km) |
| Johnston to Castilleja de la Cuesta | 4,467.93 mi (7,190.44 km) |
| Johnston to Catarroja | 4,637.61 mi (7,463.51 km) |
| Johnston to Catral | 4,670.81 mi (7,516.94 km) |
| Johnston to Caudete | 4,640.61 mi (7,468.35 km) |
