| Mission to Cocentaina | 5,500.48 mi (8,852.17 km) |
| Mission to Coin | 5,345.15 mi (8,602.19 km) |
| Mission to Colindres | 5,226.49 mi (8,411.22 km) |
| Mission to Collado-Villalba | 5,274.02 mi (8,487.72 km) |
| Mission to Colmenar Viejo | 5,285.03 mi (8,505.44 km) |
| Mission to Colmenarejo | 5,275.56 mi (8,490.20 km) |
| Mission to Conil de la Frontera | 5,287.85 mi (8,509.97 km) |
| Mission to Consuegra | 5,325.45 mi (8,570.49 km) |
| Mission to Corbera de Llobregat | 5,532.88 mi (8,904.30 km) |
| Mission to Cordoba | 5,310.41 mi (8,546.28 km) |
| Mission to Coria del Rio | 5,262.45 mi (8,469.10 km) |
| Mission to Crevillente | 5,497.14 mi (8,846.79 km) |
| Mission to Cuarte de Huerva | 5,394.86 mi (8,682.20 km) |
| Mission to Cubellas | 5,527.20 mi (8,895.18 km) |
| Mission to Cuellar | 5,238.81 mi (8,431.05 km) |
