| California to Cortona | 4,414.96 mi (7,105.20 km) |
| California to Cosenza | 4,745.89 mi (7,637.76 km) |
| California to Cossato | 4,174.56 mi (6,718.31 km) |
| California to Costa Volpino | 4,249.89 mi (6,839.54 km) |
| California to Creazzo | 4,318.66 mi (6,950.21 km) |
| California to Crema | 4,246.50 mi (6,834.08 km) |
| California to Cremona | 4,269.00 mi (6,870.29 km) |
| California to Crevalcore | 4,330.75 mi (6,969.66 km) |
| California to Crispiano | 4,741.14 mi (7,630.12 km) |
| California to Crosia | 4,759.09 mi (7,659.01 km) |
| California to Crotone | 4,792.98 mi (7,713.55 km) |
| California to Cuneo | 4,183.58 mi (6,732.81 km) |
| California to Cuorgne | 4,157.39 mi (6,690.68 km) |
| California to Cusano Milanino | 4,219.16 mi (6,790.08 km) |
| California to Cutro | 4,788.86 mi (7,706.92 km) |
