| Lake Monticello to Cocentaina | 4,082.58 mi (6,570.28 km) |
| Lake Monticello to Coin | 3,932.50 mi (6,328.75 km) |
| Lake Monticello to Colindres | 3,808.99 mi (6,129.97 km) |
| Lake Monticello to Collado-Villalba | 3,855.78 mi (6,205.28 km) |
| Lake Monticello to Colmenar Viejo | 3,866.75 mi (6,222.93 km) |
| Lake Monticello to Colmenarejo | 3,857.35 mi (6,207.81 km) |
| Lake Monticello to Conil de la Frontera | 3,877.34 mi (6,239.97 km) |
| Lake Monticello to Consuegra | 3,907.87 mi (6,289.11 km) |
| Lake Monticello to Corbera de Llobregat | 4,115.21 mi (6,622.78 km) |
| Lake Monticello to Cordoba | 3,895.38 mi (6,269.01 km) |
| Lake Monticello to Coria del Rio | 3,849.46 mi (6,195.11 km) |
| Lake Monticello to Crevillente | 4,079.74 mi (6,565.70 km) |
| Lake Monticello to Cuarte de Huerva | 3,976.68 mi (6,399.85 km) |
| Lake Monticello to Cubellas | 4,109.32 mi (6,613.31 km) |
| Lake Monticello to Cuellar | 3,820.40 mi (6,148.33 km) |
