| Rancho San Diego to Castle Pines (Colorado) | 815.30 mi (1,312.10 km) |
| Rancho San Diego to Castle Rock (Colorado) | 813.05 mi (1,308.48 km) |
| Rancho San Diego to Castro Valley (California) | 448.21 mi (721.32 km) |
| Rancho San Diego to Catalina Foothills (Arizona) | 352.97 mi (568.05 km) |
| Rancho San Diego to Cataño (Puerto Rico) | 3,281.78 mi (5,281.51 km) |
| Rancho San Diego to Cathedral City (California) | 78.72 mi (126.68 km) |
| Rancho San Diego to Catonsville (Maryland) | 2,270.77 mi (3,654.45 km) |
| Rancho San Diego to Cave Spring (Virginia) | 2,098.59 mi (3,377.35 km) |
| Rancho San Diego to Cayce (South Carolina) | 2,061.59 mi (3,317.81 km) |
| Rancho San Diego to Cayey (Puerto Rico) | 3,291.15 mi (5,296.60 km) |
| Rancho San Diego to Cedar City (Utah) | 402.64 mi (647.98 km) |
| Rancho San Diego to Cedar Falls (Iowa) | 1,491.29 mi (2,400.00 km) |
| Rancho San Diego to Cedar Hill (Texas) | 1,159.27 mi (1,865.67 km) |
| Rancho San Diego to Cedar Lake (Indiana) | 1,720.59 mi (2,769.03 km) |
| Rancho San Diego to Cedar Mill (Oregon) | 936.43 mi (1,507.04 km) |
