| Thornton to Dumas (Texas) | 4,638.40 mi (7,464.78 km) |
| Thornton to Dumont (New Jersey) | 3,335.25 mi (5,367.57 km) |
| Thornton to Duncan (Oklahoma) | 4,563.28 mi (7,343.89 km) |
| Thornton to Duncanville (Texas) | 4,626.53 mi (7,445.68 km) |
| Thornton to Dundalk (Maryland) | 3,510.93 mi (5,650.29 km) |
| Thornton to Dunedin (Florida) | 4,320.10 mi (6,952.52 km) |
| Thornton to Dunkirk (New York) | 3,472.50 mi (5,588.45 km) |
| Thornton to Dunmore (Pennsylvania) | 3,377.15 mi (5,434.99 km) |
| Thornton to Dunwoody (Georgia) | 4,077.60 mi (6,562.26 km) |
| Thornton to Durango (Colorado) | 4,765.79 mi (7,669.80 km) |
| Thornton to Durant (Oklahoma) | 4,535.83 mi (7,299.71 km) |
| Thornton to Durham (North Carolina) | 3,763.47 mi (6,056.72 km) |
| Thornton to Dyer (Indiana) | 3,826.50 mi (6,158.15 km) |
| Thornton to Dyersburg (Tennessee) | 4,166.62 mi (6,705.53 km) |
| Thornton to Eagan (Minnesota) | 3,869.66 mi (6,227.61 km) |
