| Boom to Campos del Puerto | 807.75 mi (1,299.95 km) |
| Boom to Canals | 871.26 mi (1,402.16 km) |
| Boom to Candelaria | 1,904.20 mi (3,064.51 km) |
| Boom to Canet de Mar | 661.29 mi (1,064.25 km) |
| Boom to Cangas | 869.26 mi (1,398.93 km) |
| Boom to Cangas de Narcea | 747.90 mi (1,203.63 km) |
| Boom to Canovellas | 661.46 mi (1,064.52 km) |
| Boom to Canteras | 967.72 mi (1,557.39 km) |
| Boom to Cantillana | 1,056.53 mi (1,700.32 km) |
| Boom to Capdepera | 787.80 mi (1,267.83 km) |
| Boom to Carballo | 817.26 mi (1,315.26 km) |
| Boom to Carcagente | 858.67 mi (1,381.90 km) |
| Boom to Cardedeu | 659.34 mi (1,061.11 km) |
| Boom to Carlet | 852.66 mi (1,372.22 km) |
| Boom to Carmona | 1,060.71 mi (1,707.05 km) |
