| Rancho San Diego to Cloverleaf (Texas) | 1,298.20 mi (2,089.26 km) |
| Rancho San Diego to Cloverly (Maryland) | 2,257.26 mi (3,632.71 km) |
| Rancho San Diego to Clovis (California) | 321.65 mi (517.64 km) |
| Rancho San Diego to Clovis (New Mexico) | 797.80 mi (1,283.93 km) |
| Rancho San Diego to Clute (Texas) | 1,299.50 mi (2,091.34 km) |
| Rancho San Diego to Coachella (California) | 78.28 mi (125.97 km) |
| Rancho San Diego to Coalinga (California) | 303.51 mi (488.46 km) |
| Rancho San Diego to Coamo (Puerto Rico) | 3,280.79 mi (5,279.92 km) |
| Rancho San Diego to Coatesville (Pennsylvania) | 2,318.95 mi (3,731.99 km) |
| Rancho San Diego to Cockeysville (Maryland) | 2,276.50 mi (3,663.67 km) |
| Rancho San Diego to Cocoa (Florida) | 2,161.36 mi (3,478.37 km) |
| Rancho San Diego to Cocoa Beach (Florida) | 2,170.50 mi (3,493.09 km) |
| Rancho San Diego to Coconut Creek (Florida) | 2,242.03 mi (3,608.20 km) |
| Rancho San Diego to Coeur d'Alene (Idaho) | 1,032.39 mi (1,661.46 km) |
| Rancho San Diego to Cohoes (New York) | 2,430.43 mi (3,911.41 km) |
