| Portage to Dover (New Hampshire) | 748.95 mi (1,205.32 km) |
| Portage to Dover (New Jersey) | 577.20 mi (928.92 km) |
| Portage to Dover (Ohio) | 242.30 mi (389.95 km) |
| Portage to Downers Grove (Illinois) | 127.70 mi (205.52 km) |
| Portage to Downey (California) | 1,846.87 mi (2,972.25 km) |
| Portage to Dranesville (Virginia) | 484.52 mi (779.76 km) |
| Portage to Draper (Utah) | 1,362.27 mi (2,192.35 km) |
| Portage to Drexel Heights (Arizona) | 1,556.05 mi (2,504.21 km) |
| Portage to Drexel Hill (Pennsylvania) | 557.50 mi (897.21 km) |
| Portage to Duarte (California) | 1,830.58 mi (2,946.04 km) |
| Portage to Dublin (California) | 1,932.69 mi (3,110.36 km) |
| Portage to Dublin (Georgia) | 683.43 mi (1,099.88 km) |
| Portage to Dublin (Ohio) | 192.36 mi (309.58 km) |
| Portage to Dubuque (Iowa) | 262.04 mi (421.71 km) |
| Portage to Duluth (Georgia) | 571.57 mi (919.85 km) |
