| Carlsbad to Cortona | 6,263.37 mi (10,079.92 km) |
| Carlsbad to Cosenza | 6,615.98 mi (10,647.40 km) |
| Carlsbad to Cossato | 6,019.76 mi (9,687.86 km) |
| Carlsbad to Costa Volpino | 6,069.20 mi (9,767.44 km) |
| Carlsbad to Creazzo | 6,128.71 mi (9,863.21 km) |
| Carlsbad to Crema | 6,079.64 mi (9,784.23 km) |
| Carlsbad to Cremona | 6,103.01 mi (9,821.85 km) |
| Carlsbad to Crevalcore | 6,160.73 mi (9,914.73 km) |
| Carlsbad to Crispiano | 6,575.97 mi (10,583.00 km) |
| Carlsbad to Crosia | 6,618.10 mi (10,650.81 km) |
| Carlsbad to Crotone | 6,656.03 mi (10,711.84 km) |
| Carlsbad to Cuneo | 6,058.62 mi (9,750.41 km) |
| Carlsbad to Cuorgne | 6,011.50 mi (9,674.58 km) |
| Carlsbad to Cusano Milanino | 6,053.98 mi (9,742.94 km) |
| Carlsbad to Cutro | 6,654.47 mi (10,709.33 km) |