| Thornton to Jeffersonville (Indiana) | 3,912.43 mi (6,296.46 km) |
| Thornton to Jenison (Michigan) | 3,697.02 mi (5,949.79 km) |
| Thornton to Jenks (Oklahoma) | 4,415.36 mi (7,105.84 km) |
| Thornton to Jennings (Missouri) | 4,065.17 mi (6,542.26 km) |
| Thornton to Jensen Beach (Florida) | 4,258.77 mi (6,853.83 km) |
| Thornton to Jericho (New York) | 3,324.68 mi (5,350.55 km) |
| Thornton to Jerome (Idaho) | 4,674.82 mi (7,523.39 km) |
| Thornton to Jersey City (New Jersey) | 3,348.58 mi (5,389.01 km) |
| Thornton to Jessup (Maryland) | 3,527.75 mi (5,677.37 km) |
| Thornton to Johns Creek (Georgia) | 4,068.70 mi (6,547.93 km) |
| Thornton to Johnson City (New York) | 3,358.91 mi (5,405.64 km) |
| Thornton to Johnson City (Tennessee) | 3,882.45 mi (6,248.20 km) |
| Thornton to Johnston (Iowa) | 4,043.20 mi (6,506.90 km) |
| Thornton to Johnstown (Colorado) | 4,500.85 mi (7,243.42 km) |
| Thornton to Johnstown (Pennsylvania) | 3,556.21 mi (5,723.17 km) |
