| Blackrock to Portage (Michigan) | 3,571.42 mi (5,747.64 km) |
| Blackrock to Portage (Wisconsin) | 3,655.88 mi (5,883.58 km) |
| Blackrock to Portales (New Mexico) | 4,638.39 mi (7,464.77 km) |
| Blackrock to Porterville (California) | 5,076.88 mi (8,170.45 km) |
| Blackrock to Portland (Maine) | 2,905.45 mi (4,675.87 km) |
| Blackrock to Portland (Oregon) | 4,651.08 mi (7,485.19 km) |
| Blackrock to Portland (Tennessee) | 3,872.90 mi (6,232.83 km) |
| Blackrock to Portland (Texas) | 4,741.36 mi (7,630.48 km) |
| Blackrock to Portsmouth (New Hampshire) | 2,951.69 mi (4,750.28 km) |
| Blackrock to Portsmouth (Ohio) | 3,628.28 mi (5,839.15 km) |
| Blackrock to Portsmouth (Virginia) | 3,453.58 mi (5,558.01 km) |
| Blackrock to Post Falls (Idaho) | 4,367.37 mi (7,028.61 km) |
| Blackrock to Potomac (Maryland) | 3,387.02 mi (5,450.88 km) |
| Blackrock to Potomac Park (California) | 5,114.32 mi (8,230.70 km) |
| Blackrock to Pottstown (Pennsylvania) | 3,268.73 mi (5,260.51 km) |
