| Holt to Cadiz | 4,035.90 mi (6,495.15 km) |
| Holt to Calafell | 4,219.03 mi (6,789.88 km) |
| Holt to Calahorra | 4,024.20 mi (6,476.32 km) |
| Holt to Calasparra | 4,185.19 mi (6,735.41 km) |
| Holt to Calatayud | 4,072.92 mi (6,554.73 km) |
| Holt to Caldas de Montbuy | 4,228.73 mi (6,805.48 km) |
| Holt to Caldas de Reyes | 3,717.63 mi (5,982.95 km) |
| Holt to Calella | 4,250.80 mi (6,841.00 km) |
| Holt to Callosa de Segura | 4,226.54 mi (6,801.96 km) |
| Holt to Calpe | 4,248.35 mi (6,837.06 km) |
| Holt to Calvia | 4,322.55 mi (6,956.47 km) |
| Holt to Camas | 4,016.42 mi (6,463.80 km) |
| Holt to Cambados | 3,713.68 mi (5,976.58 km) |
| Holt to Cambre | 3,709.44 mi (5,969.77 km) |
| Holt to Cambrils | 4,201.64 mi (6,761.88 km) |
