| Upper Grand Lagoon to Carlsbad (California) | 1,859.53 mi (2,992.62 km) |
| Upper Grand Lagoon to Carlsbad (New Mexico) | 1,101.67 mi (1,772.96 km) |
| Upper Grand Lagoon to Carmel (Indiana) | 677.22 mi (1,089.89 km) |
| Upper Grand Lagoon to Carmichael (California) | 2,096.74 mi (3,374.38 km) |
| Upper Grand Lagoon to Carney (Maryland) | 824.10 mi (1,326.26 km) |
| Upper Grand Lagoon to Carnot-Moon (Pennsylvania) | 779.46 mi (1,254.42 km) |
| Upper Grand Lagoon to Carol Stream (Illinois) | 822.59 mi (1,323.83 km) |
| Upper Grand Lagoon to Carolina (Puerto Rico) | 1,482.59 mi (2,386.01 km) |
| Upper Grand Lagoon to Carolina Forest (South Carolina) | 470.89 mi (757.82 km) |
| Upper Grand Lagoon to Carpentersville (Illinois) | 837.96 mi (1,348.57 km) |
| Upper Grand Lagoon to Carpinteria (California) | 1,984.95 mi (3,194.46 km) |
| Upper Grand Lagoon to Carrboro (North Carolina) | 553.48 mi (890.74 km) |
| Upper Grand Lagoon to Carroll (Iowa) | 965.83 mi (1,554.35 km) |
| Upper Grand Lagoon to Carrollton (Georgia) | 238.93 mi (384.52 km) |
| Upper Grand Lagoon to Carrollton (Texas) | 684.73 mi (1,101.97 km) |
