| Keystone to Dixon (California) | 2,355.05 mi (3,790.09 km) |
| Keystone to Dixon (Illinois) | 1,023.46 mi (1,647.10 km) |
| Keystone to Dobbs Ferry (New York) | 1,017.92 mi (1,638.18 km) |
| Keystone to Doctor Phillips (Florida) | 70.89 mi (114.09 km) |
| Keystone to Dodge City (Kansas) | 1,206.20 mi (1,941.19 km) |
| Keystone to Dolton (Illinois) | 974.17 mi (1,567.77 km) |
| Keystone to Donna (Texas) | 959.49 mi (1,544.15 km) |
| Keystone to Dorado (Puerto Rico) | 1,230.61 mi (1,980.48 km) |
| Keystone to Doral (Florida) | 211.39 mi (340.20 km) |
| Keystone to Doraville (Georgia) | 411.15 mi (661.69 km) |
| Keystone to Dothan (Alabama) | 272.63 mi (438.75 km) |
| Keystone to Douglas (Arizona) | 1,627.30 mi (2,618.88 km) |
| Keystone to Douglas (Georgia) | 233.71 mi (376.12 km) |
| Keystone to Douglasville (Georgia) | 406.99 mi (654.98 km) |
| Keystone to Dover (Delaware) | 863.33 mi (1,389.39 km) |
