| River Grove to Cocentaina | 4,394.86 mi (7,072.85 km) |
| River Grove to Coin | 4,277.76 mi (6,884.40 km) |
| River Grove to Colindres | 4,090.98 mi (6,583.79 km) |
| River Grove to Collado-Villalba | 4,164.78 mi (6,702.56 km) |
| River Grove to Colmenar Viejo | 4,174.67 mi (6,718.48 km) |
| River Grove to Colmenarejo | 4,167.02 mi (6,706.17 km) |
| River Grove to Conil de la Frontera | 4,230.69 mi (6,808.63 km) |
| River Grove to Consuegra | 4,225.65 mi (6,800.53 km) |
| River Grove to Corbera de Llobregat | 4,396.04 mi (7,074.75 km) |
| River Grove to Cordoba | 4,230.73 mi (6,808.70 km) |
| River Grove to Coria del Rio | 4,194.37 mi (6,750.18 km) |
| River Grove to Crevillente | 4,397.50 mi (7,077.09 km) |
| River Grove to Cuarte de Huerva | 4,266.39 mi (6,866.10 km) |
| River Grove to Cubellas | 4,392.89 mi (7,069.67 km) |
| River Grove to Cuellar | 4,123.60 mi (6,636.29 km) |
