| Upper Grand Lagoon to Cullman (Alabama) | 284.33 mi (457.58 km) |
| Upper Grand Lagoon to Culpeper (Virginia) | 723.31 mi (1,164.06 km) |
| Upper Grand Lagoon to Culver City (California) | 1,921.76 mi (3,092.77 km) |
| Upper Grand Lagoon to Cumberland (Maryland) | 764.74 mi (1,230.73 km) |
| Upper Grand Lagoon to Cupertino (California) | 2,129.71 mi (3,427.43 km) |
| Upper Grand Lagoon to Cutler Bay (Florida) | 457.76 mi (736.70 km) |
| Upper Grand Lagoon to Cutlerville (Michigan) | 875.51 mi (1,409.00 km) |
| Upper Grand Lagoon to Cuyahoga Falls (Ohio) | 795.48 mi (1,280.20 km) |
| Upper Grand Lagoon to Cypress (California) | 1,901.51 mi (3,060.19 km) |
| Upper Grand Lagoon to Cypress Gardens (Florida) | 286.90 mi (461.72 km) |
| Upper Grand Lagoon to Cypress Lake (Florida) | 342.63 mi (551.42 km) |
| Upper Grand Lagoon to D'Iberville (Mississippi) | 189.64 mi (305.19 km) |
| Upper Grand Lagoon to Dakota Ridge (Colorado) | 1,274.25 mi (2,050.71 km) |
| Upper Grand Lagoon to Dale City (Virginia) | 755.66 mi (1,216.11 km) |
| Upper Grand Lagoon to Dallas (Georgia) | 264.14 mi (425.08 km) |
