| Upper Grand Lagoon to Cloverleaf (Texas) | 564.93 mi (909.17 km) |
| Upper Grand Lagoon to Cloverly (Maryland) | 791.75 mi (1,274.20 km) |
| Upper Grand Lagoon to Clovis (California) | 1,997.86 mi (3,215.25 km) |
| Upper Grand Lagoon to Clovis (New Mexico) | 1,059.40 mi (1,704.94 km) |
| Upper Grand Lagoon to Clute (Texas) | 585.33 mi (942.00 km) |
| Upper Grand Lagoon to Coachella (California) | 1,792.78 mi (2,885.20 km) |
| Upper Grand Lagoon to Coalinga (California) | 2,031.42 mi (3,269.26 km) |
| Upper Grand Lagoon to Coamo (Puerto Rico) | 1,476.41 mi (2,376.06 km) |
| Upper Grand Lagoon to Coatesville (Pennsylvania) | 878.91 mi (1,414.47 km) |
| Upper Grand Lagoon to Cockeysville (Maryland) | 824.22 mi (1,326.46 km) |
| Upper Grand Lagoon to Cocoa (Florida) | 324.12 mi (521.62 km) |
| Upper Grand Lagoon to Cocoa Beach (Florida) | 333.29 mi (536.38 km) |
| Upper Grand Lagoon to Coconut Creek (Florida) | 431.87 mi (695.03 km) |
| Upper Grand Lagoon to Coeur d'Alene (Idaho) | 2,039.86 mi (3,282.84 km) |
| Upper Grand Lagoon to Cohoes (New York) | 1,095.47 mi (1,762.98 km) |
