| Portage to Dixon (California) | 1,911.70 mi (3,076.58 km) |
| Portage to Dixon (Illinois) | 201.10 mi (323.64 km) |
| Portage to Dobbs Ferry (New York) | 610.57 mi (982.61 km) |
| Portage to Doctor Phillips (Florida) | 977.57 mi (1,573.25 km) |
| Portage to Dodge City (Kansas) | 821.79 mi (1,322.55 km) |
| Portage to Dolton (Illinois) | 110.50 mi (177.83 km) |
| Portage to Donna (Texas) | 1,315.07 mi (2,116.40 km) |
| Portage to Dorado (Puerto Rico) | 1,993.56 mi (3,208.32 km) |
| Portage to Doral (Florida) | 1,170.47 mi (1,883.69 km) |
| Portage to Doraville (Georgia) | 577.43 mi (929.28 km) |
| Portage to Dothan (Alabama) | 757.77 mi (1,219.52 km) |
| Portage to Douglas (Arizona) | 1,514.62 mi (2,437.55 km) |
| Portage to Douglas (Georgia) | 754.06 mi (1,213.54 km) |
| Portage to Douglasville (Georgia) | 586.61 mi (944.06 km) |
| Portage to Dover (Delaware) | 567.45 mi (913.23 km) |
