| Thornton to Carson (California) | 5,295.31 mi (8,521.99 km) |
| Thornton to Carson City (Nevada) | 5,032.61 mi (8,099.21 km) |
| Thornton to Carteret (New Jersey) | 3,360.96 mi (5,408.94 km) |
| Thornton to Cartersville (Georgia) | 4,085.48 mi (6,574.94 km) |
| Thornton to Carthage (Missouri) | 4,295.05 mi (6,912.22 km) |
| Thornton to Cary (Illinois) | 3,819.33 mi (6,146.62 km) |
| Thornton to Cary (North Carolina) | 3,769.84 mi (6,066.97 km) |
| Thornton to Casa de Oro-Mount Helix (California) | 5,316.81 mi (8,556.58 km) |
| Thornton to Casa Grande (Arizona) | 5,138.44 mi (8,269.53 km) |
| Thornton to Casas Adobes (Arizona) | 5,145.02 mi (8,280.10 km) |
| Thornton to Cascades (Virginia) | 3,556.53 mi (5,723.69 km) |
| Thornton to Casper (Wyoming) | 4,413.00 mi (7,102.03 km) |
| Thornton to Casselberry (Florida) | 4,228.64 mi (6,805.34 km) |
| Thornton to Castaic (California) | 5,269.61 mi (8,480.62 km) |
| Thornton to Castle Pines (Colorado) | 4,545.73 mi (7,315.65 km) |
