| Grays to Cookeville (Tennessee) | 4,154.92 mi (6,686.70 km) |
| Grays to Coolidge (Arizona) | 5,296.57 mi (8,524.00 km) |
| Grays to Coon Rapids (Minnesota) | 4,020.95 mi (6,471.09 km) |
| Grays to Cooper City (Florida) | 4,437.85 mi (7,142.03 km) |
| Grays to Coos Bay (Oregon) | 5,092.88 mi (8,196.19 km) |
| Grays to Copiague (New York) | 3,457.32 mi (5,564.03 km) |
| Grays to Coppell (Texas) | 4,764.37 mi (7,667.51 km) |
| Grays to Copperas Cove (Texas) | 4,895.99 mi (7,879.33 km) |
| Grays to Coral Gables (Florida) | 4,454.55 mi (7,168.90 km) |
| Grays to Coral Springs (Florida) | 4,425.40 mi (7,121.99 km) |
| Grays to Coral Terrace (Florida) | 4,453.80 mi (7,167.70 km) |
| Grays to Coralville (Iowa) | 4,123.68 mi (6,636.41 km) |
| Grays to Coram (New York) | 3,432.46 mi (5,524.00 km) |
| Grays to Corcoran (California) | 5,381.15 mi (8,660.12 km) |
| Grays to Cordele (Georgia) | 4,288.60 mi (6,901.84 km) |
