| Mattoon to Cocentaina | 4,503.65 mi (7,247.93 km) |
| Mattoon to Coin | 4,377.05 mi (7,044.19 km) |
| Mattoon to Colindres | 4,206.92 mi (6,770.38 km) |
| Mattoon to Collado-Villalba | 4,273.99 mi (6,878.32 km) |
| Mattoon to Colmenar Viejo | 4,284.19 mi (6,894.73 km) |
| Mattoon to Colmenarejo | 4,276.06 mi (6,881.65 km) |
| Mattoon to Conil de la Frontera | 4,327.47 mi (6,964.39 km) |
| Mattoon to Consuegra | 4,332.63 mi (6,972.69 km) |
| Mattoon to Corbera de Llobregat | 4,512.88 mi (7,262.77 km) |
| Mattoon to Cordoba | 4,332.81 mi (6,972.99 km) |
| Mattoon to Coria del Rio | 4,293.60 mi (6,909.89 km) |
| Mattoon to Crevillente | 4,504.81 mi (7,249.80 km) |
| Mattoon to Cuarte de Huerva | 4,380.78 mi (7,050.18 km) |
| Mattoon to Cubellas | 4,509.05 mi (7,256.61 km) |
| Mattoon to Cuellar | 4,234.25 mi (6,814.36 km) |
