| Grays to Castle Rock (Colorado) | 4,717.05 mi (7,591.36 km) |
| Grays to Castro Valley (California) | 5,362.45 mi (8,630.03 km) |
| Grays to Catalina Foothills (Arizona) | 5,309.41 mi (8,544.68 km) |
| Grays to Cataño (Puerto Rico) | 4,221.57 mi (6,793.95 km) |
| Grays to Cathedral City (California) | 5,411.57 mi (8,709.08 km) |
| Grays to Catonsville (Maryland) | 3,655.93 mi (5,883.65 km) |
| Grays to Cave Spring (Virginia) | 3,881.96 mi (6,247.42 km) |
| Grays to Cayce (South Carolina) | 4,079.59 mi (6,565.46 km) |
| Grays to Cayey (Puerto Rico) | 4,239.28 mi (6,822.46 km) |
| Grays to Cedar City (Utah) | 5,085.55 mi (8,184.40 km) |
| Grays to Cedar Falls (Iowa) | 4,116.09 mi (6,624.21 km) |
| Grays to Cedar Hill (Texas) | 4,783.01 mi (7,697.52 km) |
| Grays to Cedar Lake (Indiana) | 3,982.46 mi (6,409.15 km) |
| Grays to Cedar Mill (Oregon) | 4,929.38 mi (7,933.08 km) |
| Grays to Cedar Park (Texas) | 4,924.24 mi (7,924.79 km) |
