| Rancho San Diego to Carrollwood (Florida) | 2,066.56 mi (3,325.80 km) |
| Rancho San Diego to Carson (California) | 107.10 mi (172.36 km) |
| Rancho San Diego to Carson City (Nevada) | 468.82 mi (754.50 km) |
| Rancho San Diego to Carteret (New Jersey) | 2,402.23 mi (3,866.02 km) |
| Rancho San Diego to Cartersville (Georgia) | 1,846.25 mi (2,971.25 km) |
| Rancho San Diego to Carthage (Missouri) | 1,311.63 mi (2,110.87 km) |
| Rancho San Diego to Cary (Illinois) | 1,691.79 mi (2,722.67 km) |
| Rancho San Diego to Cary (North Carolina) | 2,171.75 mi (3,495.10 km) |
| Rancho San Diego to Casa de Oro-Mount Helix (California) | 2.85 mi (4.59 km) |
| Rancho San Diego to Casa Grande (Arizona) | 299.54 mi (482.07 km) |
| Rancho San Diego to Casas Adobes (Arizona) | 345.27 mi (555.67 km) |
| Rancho San Diego to Cascades (Virginia) | 2,236.56 mi (3,599.39 km) |
| Rancho San Diego to Casper (Wyoming) | 903.90 mi (1,454.69 km) |
| Rancho San Diego to Casselberry (Florida) | 2,123.53 mi (3,417.49 km) |
| Rancho San Diego to Castaic (California) | 154.31 mi (248.34 km) |
