| Healdsburg to Carmona | 5,838.02 mi (9,395.39 km) |
| Healdsburg to Cartagena | 6,004.93 mi (9,664.01 km) |
| Healdsburg to Cartama | 5,913.95 mi (9,517.58 km) |
| Healdsburg to Cartaya | 5,788.49 mi (9,315.67 km) |
| Healdsburg to Caspe | 5,850.24 mi (9,415.05 km) |
| Healdsburg to Cassa de la Selva | 5,913.09 mi (9,516.19 km) |
| Healdsburg to Castalla | 5,964.63 mi (9,599.14 km) |
| Healdsburg to Castellbisbal | 5,905.56 mi (9,504.08 km) |
| Healdsburg to Castelldefels | 5,915.78 mi (9,520.53 km) |
| Healdsburg to Castello de Ampurias | 5,899.94 mi (9,495.03 km) |
| Healdsburg to Castellon de la Plana | 5,915.23 mi (9,519.64 km) |
| Healdsburg to Castilleja de la Cuesta | 5,826.15 mi (9,376.28 km) |
| Healdsburg to Catarroja | 5,932.34 mi (9,547.17 km) |
| Healdsburg to Catral | 5,982.43 mi (9,627.79 km) |
| Healdsburg to Caudete | 5,947.70 mi (9,571.90 km) |
