| Keystone to Portage (Michigan) | 986.45 mi (1,587.53 km) |
| Keystone to Portage (Wisconsin) | 1,131.51 mi (1,820.99 km) |
| Keystone to Portales (New Mexico) | 1,293.57 mi (2,081.80 km) |
| Keystone to Porterville (California) | 2,188.12 mi (3,521.44 km) |
| Keystone to Portland (Maine) | 1,273.43 mi (2,049.39 km) |
| Keystone to Portland (Oregon) | 2,485.14 mi (3,999.44 km) |
| Keystone to Portland (Tennessee) | 627.68 mi (1,010.15 km) |
| Keystone to Portland (Texas) | 897.98 mi (1,445.16 km) |
| Keystone to Portsmouth (New Hampshire) | 1,223.76 mi (1,969.46 km) |
| Keystone to Portsmouth (Ohio) | 734.22 mi (1,181.61 km) |
| Keystone to Portsmouth (Virginia) | 703.23 mi (1,131.74 km) |
| Keystone to Post Falls (Idaho) | 2,279.72 mi (3,668.85 km) |
| Keystone to Potomac (Maryland) | 813.35 mi (1,308.97 km) |
| Keystone to Potomac Park (California) | 2,181.35 mi (3,510.55 km) |
| Keystone to Pottstown (Pennsylvania) | 926.15 mi (1,490.50 km) |
