| Clay to Campo de Criptana | 4,480.67 mi (7,210.93 km) |
| Clay to Campos del Puerto | 4,775.24 mi (7,685.00 km) |
| Clay to Canals | 4,616.49 mi (7,429.53 km) |
| Clay to Candelaria | 4,094.95 mi (6,590.19 km) |
| Clay to Canet de Mar | 4,687.94 mi (7,544.52 km) |
| Clay to Cangas | 4,132.12 mi (6,650.00 km) |
| Clay to Cangas de Narcea | 4,217.44 mi (6,787.31 km) |
| Clay to Canovellas | 4,673.15 mi (7,520.70 km) |
| Clay to Canteras | 4,634.33 mi (7,458.24 km) |
| Clay to Cantillana | 4,397.27 mi (7,076.72 km) |
| Clay to Capdepera | 4,786.37 mi (7,702.92 km) |
| Clay to Carballo | 4,114.81 mi (6,622.15 km) |
| Clay to Carcagente | 4,618.30 mi (7,432.44 km) |
| Clay to Cardedeu | 4,676.07 mi (7,525.41 km) |
| Clay to Carlet | 4,611.72 mi (7,421.85 km) |
