| Helena to Carmona | 5,061.54 mi (8,145.76 km) |
| Helena to Cartagena | 5,226.88 mi (8,411.84 km) |
| Helena to Cartama | 5,137.41 mi (8,267.87 km) |
| Helena to Cartaya | 5,013.03 mi (8,067.70 km) |
| Helena to Caspe | 5,072.60 mi (8,163.55 km) |
| Helena to Cassa de la Selva | 5,137.02 mi (8,267.24 km) |
| Helena to Castalla | 5,186.47 mi (8,346.82 km) |
| Helena to Castellbisbal | 5,128.78 mi (8,253.98 km) |
| Helena to Castelldefels | 5,138.90 mi (8,270.26 km) |
| Helena to Castello de Ampurias | 5,124.24 mi (8,246.67 km) |
| Helena to Castellon de la Plana | 5,137.25 mi (8,267.61 km) |
| Helena to Castilleja de la Cuesta | 5,049.95 mi (8,127.11 km) |
| Helena to Catarroja | 5,154.23 mi (8,294.93 km) |
| Helena to Catral | 5,204.30 mi (8,375.51 km) |
| Helena to Caudete | 5,169.54 mi (8,319.58 km) |
