| Champaign to Cocentaina | 4,477.16 mi (7,205.29 km) |
| Champaign to Coin | 4,353.07 mi (7,005.58 km) |
| Champaign to Colindres | 4,178.48 mi (6,724.61 km) |
| Champaign to Collado-Villalba | 4,247.35 mi (6,835.45 km) |
| Champaign to Colmenar Viejo | 4,257.47 mi (6,851.74 km) |
| Champaign to Colmenarejo | 4,249.46 mi (6,838.85 km) |
| Champaign to Conil de la Frontera | 4,304.14 mi (6,926.84 km) |
| Champaign to Consuegra | 4,306.59 mi (6,930.79 km) |
| Champaign to Corbera de Llobregat | 4,484.23 mi (7,216.68 km) |
| Champaign to Cordoba | 4,308.08 mi (6,933.18 km) |
| Champaign to Coria del Rio | 4,269.62 mi (6,871.29 km) |
| Champaign to Crevillente | 4,478.71 mi (7,207.79 km) |
| Champaign to Cuarte de Huerva | 4,352.77 mi (7,005.11 km) |
| Champaign to Cubellas | 4,480.58 mi (7,210.80 km) |
| Champaign to Cuellar | 4,207.22 mi (6,770.87 km) |
