| Walnut Creek to Cadiz | 5,860.24 mi (9,431.15 km) |
| Walnut Creek to Calafell | 5,917.15 mi (9,522.74 km) |
| Walnut Creek to Calahorra | 5,738.24 mi (9,234.81 km) |
| Walnut Creek to Calasparra | 5,952.70 mi (9,579.95 km) |
| Walnut Creek to Calatayud | 5,797.77 mi (9,330.61 km) |
| Walnut Creek to Caldas de Montbuy | 5,914.98 mi (9,519.24 km) |
| Walnut Creek to Caldas de Reyes | 5,481.13 mi (8,821.03 km) |
| Walnut Creek to Calella | 5,932.55 mi (9,547.52 km) |
| Walnut Creek to Callosa de Segura | 5,988.46 mi (9,637.49 km) |
| Walnut Creek to Calpe | 5,995.43 mi (9,648.71 km) |
| Walnut Creek to Calvia | 6,034.79 mi (9,712.05 km) |
| Walnut Creek to Camas | 5,828.65 mi (9,380.31 km) |
| Walnut Creek to Cambados | 5,479.86 mi (8,818.98 km) |
| Walnut Creek to Cambre | 5,460.71 mi (8,788.16 km) |
| Walnut Creek to Cambrils | 5,906.42 mi (9,505.47 km) |
