| Rancho San Diego to Commerce (California) | 111.00 mi (178.64 km) |
| Rancho San Diego to Commerce City (Colorado) | 831.11 mi (1,337.54 km) |
| Rancho San Diego to Compton (California) | 108.63 mi (174.83 km) |
| Rancho San Diego to Comstock Park (Michigan) | 1,831.98 mi (2,948.29 km) |
| Rancho San Diego to Concord (California) | 459.78 mi (739.94 km) |
| Rancho San Diego to Concord (Missouri) | 1,537.58 mi (2,474.49 km) |
| Rancho San Diego to Concord (New Hampshire) | 2,539.74 mi (4,087.32 km) |
| Rancho San Diego to Concord (North Carolina) | 2,072.77 mi (3,335.81 km) |
| Rancho San Diego to Conneaut (Ohio) | 2,077.08 mi (3,342.75 km) |
| Rancho San Diego to Connersville (Indiana) | 1,824.04 mi (2,935.51 km) |
| Rancho San Diego to Conroe (Texas) | 1,271.30 mi (2,045.96 km) |
| Rancho San Diego to Converse (Texas) | 1,121.81 mi (1,805.38 km) |
| Rancho San Diego to Conway (Arkansas) | 1,407.41 mi (2,265.01 km) |
| Rancho San Diego to Conway (Florida) | 2,126.27 mi (3,421.90 km) |
| Rancho San Diego to Conway (South Carolina) | 2,176.13 mi (3,502.14 km) |
