| Upper Grand Lagoon to Conyers (Georgia) | 262.28 mi (422.09 km) |
| Upper Grand Lagoon to Cookeville (Tennessee) | 413.34 mi (665.20 km) |
| Upper Grand Lagoon to Coolidge (Arizona) | 1,526.31 mi (2,456.37 km) |
| Upper Grand Lagoon to Coon Rapids (Minnesota) | 1,115.15 mi (1,794.65 km) |
| Upper Grand Lagoon to Cooper City (Florida) | 437.65 mi (704.33 km) |
| Upper Grand Lagoon to Coos Bay (Oregon) | 2,292.28 mi (3,689.07 km) |
| Upper Grand Lagoon to Copiague (New York) | 1,002.94 mi (1,614.07 km) |
| Upper Grand Lagoon to Coppell (Texas) | 689.43 mi (1,109.53 km) |
| Upper Grand Lagoon to Copperas Cove (Texas) | 726.24 mi (1,168.76 km) |
| Upper Grand Lagoon to Coral Gables (Florida) | 454.44 mi (731.36 km) |
| Upper Grand Lagoon to Coral Springs (Florida) | 428.77 mi (690.03 km) |
| Upper Grand Lagoon to Coral Terrace (Florida) | 450.90 mi (725.65 km) |
| Upper Grand Lagoon to Coralville (Iowa) | 860.82 mi (1,385.35 km) |
| Upper Grand Lagoon to Coram (New York) | 1,027.68 mi (1,653.88 km) |
| Upper Grand Lagoon to Corcoran (California) | 1,988.73 mi (3,200.56 km) |
