| Rancho Cucamonga to Cortona | 6,215.41 mi (10,002.73 km) |
| Rancho Cucamonga to Cosenza | 6,568.00 mi (10,570.18 km) |
| Rancho Cucamonga to Cossato | 5,972.28 mi (9,611.46 km) |
| Rancho Cucamonga to Costa Volpino | 6,020.65 mi (9,689.31 km) |
| Rancho Cucamonga to Creazzo | 6,079.68 mi (9,784.30 km) |
| Rancho Cucamonga to Crema | 6,031.57 mi (9,706.87 km) |
| Rancho Cucamonga to Cremona | 6,054.91 mi (9,744.44 km) |
| Rancho Cucamonga to Crevalcore | 6,112.33 mi (9,836.85 km) |
| Rancho Cucamonga to Crispiano | 6,526.73 mi (10,503.76 km) |
| Rancho Cucamonga to Crosia | 6,569.68 mi (10,572.88 km) |
| Rancho Cucamonga to Crotone | 6,607.67 mi (10,634.02 km) |
| Rancho Cucamonga to Cuneo | 6,012.19 mi (9,675.69 km) |
| Rancho Cucamonga to Cuorgne | 5,964.39 mi (9,598.75 km) |
| Rancho Cucamonga to Cusano Milanino | 6,006.03 mi (9,665.77 km) |
| Rancho Cucamonga to Cutro | 6,606.22 mi (10,631.68 km) |
