| Apex to Dumas (Texas) | 1,291.07 mi (2,077.77 km) |
| Apex to Dumont (New Jersey) | 447.22 mi (719.73 km) |
| Apex to Duncan (Oklahoma) | 1,077.69 mi (1,734.37 km) |
| Apex to Duncanville (Texas) | 1,051.09 mi (1,691.56 km) |
| Apex to Dundalk (Maryland) | 277.59 mi (446.74 km) |
| Apex to Dunedin (Florida) | 578.68 mi (931.29 km) |
| Apex to Dunkirk (New York) | 467.47 mi (752.31 km) |
| Apex to Dunmore (Pennsylvania) | 430.94 mi (693.54 km) |
| Apex to Dunwoody (Georgia) | 332.00 mi (534.31 km) |
| Apex to Durango (Colorado) | 1,608.24 mi (2,588.21 km) |
| Apex to Durant (Oklahoma) | 998.99 mi (1,607.71 km) |
| Apex to Durham (North Carolina) | 17.72 mi (28.52 km) |
| Apex to Dyer (Indiana) | 613.02 mi (986.55 km) |
| Apex to Dyersburg (Tennessee) | 588.11 mi (946.47 km) |
| Apex to Eagan (Minnesota) | 978.39 mi (1,574.56 km) |
