| Seia to Cervello | 508.68 mi (818.65 km) |
| Seia to Cervera | 475.21 mi (764.77 km) |
| Seia to Ceuti | 380.10 mi (611.72 km) |
| Seia to Cheste | 377.27 mi (607.16 km) |
| Seia to Chiclana de la Frontera | 289.20 mi (465.43 km) |
| Seia to Chipiona | 263.91 mi (424.73 km) |
| Seia to Chiva | 375.55 mi (604.39 km) |
| Seia to Churriana de la Vega | 314.16 mi (505.59 km) |
| Seia to Ciempozuelos | 215.99 mi (347.60 km) |
| Seia to Cieza | 368.01 mi (592.25 km) |
| Seia to Cisterniga | 177.70 mi (285.99 km) |
| Seia to Ciudad de Melilla | 439.60 mi (707.47 km) |
| Seia to Ciudad Real | 224.43 mi (361.18 km) |
| Seia to Ciudad-Rodrigo | 62.29 mi (100.24 km) |
| Seia to Cocentaina | 403.54 mi (649.43 km) |
