| Grays to Cicero (Illinois) | 3,972.51 mi (6,393.13 km) |
| Grays to Cimarron Hills (Colorado) | 4,738.94 mi (7,626.59 km) |
| Grays to Cincinnati (Ohio) | 3,972.77 mi (6,393.56 km) |
| Grays to Cinco Ranch (Texas) | 4,884.11 mi (7,860.22 km) |
| Grays to Circleville (Ohio) | 3,889.03 mi (6,258.79 km) |
| Grays to Citrus (California) | 5,441.62 mi (8,757.45 km) |
| Grays to Citrus Heights (California) | 5,282.41 mi (8,501.21 km) |
| Grays to Citrus Park (Florida) | 4,431.70 mi (7,132.13 km) |
| Grays to Claiborne (Louisiana) | 4,599.56 mi (7,402.28 km) |
| Grays to Claremont (California) | 5,435.49 mi (8,747.57 km) |
| Grays to Claremont (New Hampshire) | 3,300.10 mi (5,311.00 km) |
| Grays to Claremore (Oklahoma) | 4,540.01 mi (7,306.44 km) |
| Grays to Clarksburg (Maryland) | 3,679.02 mi (5,920.81 km) |
| Grays to Clarksburg (West Virginia) | 3,799.70 mi (6,115.02 km) |
| Grays to Clarksdale (Mississippi) | 4,451.84 mi (7,164.55 km) |
