| Gresham to Portage (Michigan) | 1,833.93 mi (2,951.43 km) |
| Gresham to Portage (Wisconsin) | 1,618.49 mi (2,604.71 km) |
| Gresham to Portales (New Mexico) | 1,274.13 mi (2,050.51 km) |
| Gresham to Porterville (California) | 675.84 mi (1,087.66 km) |
| Gresham to Portland (Maine) | 2,524.39 mi (4,062.61 km) |
| Gresham to Portland (Oregon) | 10.39 mi (16.72 km) |
| Gresham to Portland (Tennessee) | 1,951.51 mi (3,140.65 km) |
| Gresham to Portland (Texas) | 1,834.01 mi (2,951.55 km) |
| Gresham to Portsmouth (New Hampshire) | 2,516.52 mi (4,049.95 km) |
| Gresham to Portsmouth (Ohio) | 2,054.99 mi (3,307.18 km) |
| Gresham to Portsmouth (Virginia) | 2,434.88 mi (3,918.56 km) |
| Gresham to Post Falls (Idaho) | 302.76 mi (487.24 km) |
| Gresham to Potomac (Maryland) | 2,325.06 mi (3,741.82 km) |
| Gresham to Potomac Park (California) | 723.77 mi (1,164.80 km) |
| Gresham to Pottstown (Pennsylvania) | 2,363.00 mi (3,802.88 km) |
