| Round Lake Beach to Cocentaina | 4,390.22 mi (7,065.37 km) |
| Round Lake Beach to Coin | 4,275.51 mi (6,880.77 km) |
| Round Lake Beach to Colindres | 4,084.54 mi (6,573.42 km) |
| Round Lake Beach to Collado-Villalba | 4,160.07 mi (6,694.99 km) |
| Round Lake Beach to Colmenar Viejo | 4,169.89 mi (6,710.79 km) |
| Round Lake Beach to Colmenarejo | 4,162.36 mi (6,698.67 km) |
| Round Lake Beach to Conil de la Frontera | 4,229.05 mi (6,806.00 km) |
| Round Lake Beach to Consuegra | 4,221.50 mi (6,793.85 km) |
| Round Lake Beach to Corbera de Llobregat | 4,389.30 mi (7,063.89 km) |
| Round Lake Beach to Cordoba | 4,227.80 mi (6,803.99 km) |
| Round Lake Beach to Coria del Rio | 4,192.15 mi (6,746.61 km) |
| Round Lake Beach to Crevillente | 4,393.23 mi (7,070.22 km) |
| Round Lake Beach to Cuarte de Huerva | 4,260.32 mi (6,856.33 km) |
| Round Lake Beach to Cubellas | 4,386.33 mi (7,059.11 km) |
| Round Lake Beach to Cuellar | 4,118.53 mi (6,628.14 km) |
