| Thornton to Hilliard (Ohio) | 3,733.04 mi (6,007.75 km) |
| Thornton to Hillsboro (Oregon) | 4,751.71 mi (7,647.13 km) |
| Thornton to Hillsborough (California) | 5,201.42 mi (8,370.88 km) |
| Thornton to Hillsborough (New Jersey) | 3,381.20 mi (5,441.52 km) |
| Thornton to Hilo (Hawaii) | 7,115.97 mi (11,452.05 km) |
| Thornton to Hilton Head Island (South Carolina) | 4,025.29 mi (6,478.07 km) |
| Thornton to Hinesville (Georgia) | 4,078.18 mi (6,563.19 km) |
| Thornton to Hinsdale (Illinois) | 3,827.34 mi (6,159.51 km) |
| Thornton to Hobart (Indiana) | 3,816.96 mi (6,142.81 km) |
| Thornton to Hobbs (New Mexico) | 4,850.22 mi (7,805.68 km) |
| Thornton to Hobe Sound (Florida) | 4,263.63 mi (6,861.65 km) |
| Thornton to Hoboken (New Jersey) | 3,345.76 mi (5,384.48 km) |
| Thornton to Hockessin (Delaware) | 3,455.03 mi (5,560.34 km) |
| Thornton to Hoffman Estates (Illinois) | 3,822.73 mi (6,152.09 km) |
| Thornton to Holbrook (New York) | 3,305.77 mi (5,320.12 km) |
