| Thornton to Cookeville (Tennessee) | 4,013.49 mi (6,459.08 km) |
| Thornton to Coolidge (Arizona) | 5,128.85 mi (8,254.08 km) |
| Thornton to Coon Rapids (Minnesota) | 3,857.36 mi (6,207.83 km) |
| Thornton to Cooper City (Florida) | 4,323.07 mi (6,957.32 km) |
| Thornton to Coos Bay (Oregon) | 4,911.33 mi (7,904.02 km) |
| Thornton to Copiague (New York) | 3,324.10 mi (5,349.62 km) |
| Thornton to Coppell (Texas) | 4,612.54 mi (7,423.16 km) |
| Thornton to Copperas Cove (Texas) | 4,745.33 mi (7,636.86 km) |
| Thornton to Coral Gables (Florida) | 4,340.44 mi (6,985.26 km) |
| Thornton to Coral Springs (Florida) | 4,310.26 mi (6,936.69 km) |
| Thornton to Coral Terrace (Florida) | 4,339.55 mi (6,983.84 km) |
| Thornton to Coralville (Iowa) | 3,966.35 mi (6,383.22 km) |
| Thornton to Coram (New York) | 3,299.30 mi (5,309.72 km) |
| Thornton to Corcoran (California) | 5,204.96 mi (8,376.58 km) |
| Thornton to Cordele (Georgia) | 4,157.00 mi (6,690.04 km) |
