| Round Lake Beach to Carmona | 4,204.44 mi (6,766.39 km) |
| Round Lake Beach to Cartagena | 4,410.93 mi (7,098.70 km) |
| Round Lake Beach to Cartama | 4,279.30 mi (6,886.86 km) |
| Round Lake Beach to Cartaya | 4,141.29 mi (6,664.76 km) |
| Round Lake Beach to Caspe | 4,311.86 mi (6,939.27 km) |
| Round Lake Beach to Cassa de la Selva | 4,410.92 mi (7,098.69 km) |
| Round Lake Beach to Castalla | 4,385.77 mi (7,058.22 km) |
| Round Lake Beach to Castellbisbal | 4,389.14 mi (7,063.63 km) |
| Round Lake Beach to Castelldefels | 4,396.58 mi (7,075.62 km) |
| Round Lake Beach to Castello de Ampurias | 4,404.91 mi (7,089.02 km) |
| Round Lake Beach to Castellon de la Plana | 4,360.00 mi (7,016.74 km) |
| Round Lake Beach to Castilleja de la Cuesta | 4,188.39 mi (6,740.56 km) |
| Round Lake Beach to Catarroja | 4,366.18 mi (7,026.69 km) |
| Round Lake Beach to Catral | 4,396.90 mi (7,076.12 km) |
| Round Lake Beach to Caudete | 4,367.44 mi (7,028.71 km) |
