| Redwood City to Cortona | 6,160.76 mi (9,914.78 km) |
| Redwood City to Cosenza | 6,511.67 mi (10,479.52 km) |
| Redwood City to Cossato | 5,921.93 mi (9,530.42 km) |
| Redwood City to Costa Volpino | 5,962.96 mi (9,596.46 km) |
| Redwood City to Creazzo | 6,018.50 mi (9,685.84 km) |
| Redwood City to Crema | 5,977.00 mi (9,619.05 km) |
| Redwood City to Cremona | 6,000.06 mi (9,656.16 km) |
| Redwood City to Crevalcore | 6,055.28 mi (9,745.03 km) |
| Redwood City to Crispiano | 6,462.25 mi (10,399.99 km) |
| Redwood City to Crosia | 6,510.45 mi (10,477.56 km) |
| Redwood City to Crotone | 6,548.71 mi (10,539.13 km) |
| Redwood City to Cuneo | 5,968.48 mi (9,605.34 km) |
| Redwood City to Cuorgne | 5,916.40 mi (9,521.53 km) |
| Redwood City to Cusano Milanino | 5,952.41 mi (9,579.49 km) |
| Redwood City to Cutro | 6,547.95 mi (10,537.91 km) |
