| Upper Grand Lagoon to Castle Pines (Colorado) | 1,256.95 mi (2,022.87 km) |
| Upper Grand Lagoon to Castle Rock (Colorado) | 1,253.63 mi (2,017.52 km) |
| Upper Grand Lagoon to Castro Valley (California) | 2,131.93 mi (3,431.02 km) |
| Upper Grand Lagoon to Catalina Foothills (Arizona) | 1,489.27 mi (2,396.76 km) |
| Upper Grand Lagoon to Cataño (Puerto Rico) | 1,472.63 mi (2,369.98 km) |
| Upper Grand Lagoon to Cathedral City (California) | 1,811.14 mi (2,914.74 km) |
| Upper Grand Lagoon to Catonsville (Maryland) | 809.07 mi (1,302.07 km) |
| Upper Grand Lagoon to Cave Spring (Virginia) | 588.20 mi (946.62 km) |
| Upper Grand Lagoon to Cayce (South Carolina) | 379.08 mi (610.07 km) |
| Upper Grand Lagoon to Cayey (Puerto Rico) | 1,485.18 mi (2,390.17 km) |
| Upper Grand Lagoon to Cedar City (Utah) | 1,644.98 mi (2,647.34 km) |
| Upper Grand Lagoon to Cedar Falls (Iowa) | 930.74 mi (1,497.88 km) |
| Upper Grand Lagoon to Cedar Hill (Texas) | 682.06 mi (1,097.67 km) |
| Upper Grand Lagoon to Cedar Lake (Indiana) | 779.67 mi (1,254.76 km) |
| Upper Grand Lagoon to Cedar Mill (Oregon) | 2,256.31 mi (3,631.18 km) |
