| Alpena to Portage (Michigan) | 225.80 mi (363.39 km) |
| Alpena to Portage (Wisconsin) | 315.90 mi (508.39 km) |
| Alpena to Portales (New Mexico) | 1,294.39 mi (2,083.12 km) |
| Alpena to Porterville (California) | 1,950.92 mi (3,139.70 km) |
| Alpena to Portland (Maine) | 656.71 mi (1,056.88 km) |
| Alpena to Portland (Oregon) | 1,886.48 mi (3,036.00 km) |
| Alpena to Portland (Tennessee) | 607.68 mi (977.97 km) |
| Alpena to Portland (Texas) | 1,411.14 mi (2,271.01 km) |
| Alpena to Portsmouth (New Hampshire) | 642.93 mi (1,034.70 km) |
| Alpena to Portsmouth (Ohio) | 437.42 mi (703.97 km) |
| Alpena to Portsmouth (Virginia) | 677.49 mi (1,090.31 km) |
| Alpena to Post Falls (Idaho) | 1,594.02 mi (2,565.33 km) |
| Alpena to Potomac (Maryland) | 526.92 mi (847.99 km) |
| Alpena to Potomac Park (California) | 1,971.97 mi (3,173.58 km) |
| Alpena to Pottstown (Pennsylvania) | 517.21 mi (832.36 km) |
