| Grays to Cloverly (Maryland) | 3,673.50 mi (5,911.92 km) |
| Grays to Clovis (California) | 5,342.06 mi (8,597.21 km) |
| Grays to Clovis (New Mexico) | 4,919.29 mi (7,916.82 km) |
| Grays to Clute (Texas) | 4,907.01 mi (7,897.07 km) |
| Grays to Coachella (California) | 5,409.36 mi (8,705.53 km) |
| Grays to Coalinga (California) | 5,401.22 mi (8,692.43 km) |
| Grays to Coamo (Puerto Rico) | 4,249.88 mi (6,839.53 km) |
| Grays to Coatesville (Pennsylvania) | 3,586.32 mi (5,771.63 km) |
| Grays to Cockeysville (Maryland) | 3,641.67 mi (5,860.70 km) |
| Grays to Cocoa (Florida) | 4,340.90 mi (6,986.00 km) |
| Grays to Cocoa Beach (Florida) | 4,337.47 mi (6,980.48 km) |
| Grays to Coconut Creek (Florida) | 4,421.72 mi (7,116.07 km) |
| Grays to Coeur d'Alene (Idaho) | 4,642.80 mi (7,471.87 km) |
| Grays to Cohoes (New York) | 3,380.54 mi (5,440.46 km) |
| Grays to Cold Springs (Nevada) | 5,186.20 mi (8,346.39 km) |
