| Holt to Carmona | 4,032.66 mi (6,489.95 km) |
| Holt to Cartagena | 4,241.84 mi (6,826.58 km) |
| Holt to Cartama | 4,107.29 mi (6,610.04 km) |
| Holt to Cartaya | 3,968.58 mi (6,386.81 km) |
| Holt to Caspe | 4,147.68 mi (6,675.04 km) |
| Holt to Cassa de la Selva | 4,249.52 mi (6,838.94 km) |
| Holt to Castalla | 4,217.97 mi (6,788.17 km) |
| Holt to Castellbisbal | 4,226.58 mi (6,802.03 km) |
| Holt to Castelldefels | 4,233.77 mi (6,813.59 km) |
| Holt to Castello de Ampurias | 4,244.16 mi (6,830.31 km) |
| Holt to Castellon de la Plana | 4,194.23 mi (6,749.96 km) |
| Holt to Castilleja de la Cuesta | 4,016.32 mi (6,463.64 km) |
| Holt to Catarroja | 4,199.48 mi (6,758.42 km) |
| Holt to Catral | 4,228.52 mi (6,805.15 km) |
| Holt to Caudete | 4,199.57 mi (6,758.56 km) |
