| Grays to Portage (Michigan) | 3,873.32 mi (6,233.50 km) |
| Grays to Portage (Wisconsin) | 3,957.27 mi (6,368.61 km) |
| Grays to Portales (New Mexico) | 4,939.21 mi (7,948.89 km) |
| Grays to Porterville (California) | 5,365.97 mi (8,635.69 km) |
| Grays to Portland (Maine) | 3,204.41 mi (5,157.00 km) |
| Grays to Portland (Oregon) | 4,925.28 mi (7,926.47 km) |
| Grays to Portland (Tennessee) | 4,173.85 mi (6,717.15 km) |
| Grays to Portland (Texas) | 5,042.65 mi (8,115.36 km) |
| Grays to Portsmouth (New Hampshire) | 3,250.35 mi (5,230.93 km) |
| Grays to Portsmouth (Ohio) | 3,929.02 mi (6,323.14 km) |
| Grays to Portsmouth (Virginia) | 3,749.77 mi (6,034.68 km) |
| Grays to Post Falls (Idaho) | 4,645.89 mi (7,476.84 km) |
| Grays to Potomac (Maryland) | 3,685.58 mi (5,931.37 km) |
| Grays to Potomac Park (California) | 5,404.09 mi (8,697.04 km) |
| Grays to Pottstown (Pennsylvania) | 3,567.45 mi (5,741.26 km) |
