| Irving to Portage (Michigan) | 895.84 mi (1,441.72 km) |
| Irving to Portage (Wisconsin) | 842.70 mi (1,356.20 km) |
| Irving to Portales (New Mexico) | 378.89 mi (609.77 km) |
| Irving to Porterville (California) | 1,273.43 mi (2,049.38 km) |
| Irving to Portland (Maine) | 1,619.81 mi (2,606.83 km) |
| Irving to Portland (Oregon) | 1,619.31 mi (2,606.03 km) |
| Irving to Portland (Tennessee) | 646.41 mi (1,040.29 km) |
| Irving to Portland (Texas) | 343.65 mi (553.05 km) |
| Irving to Portsmouth (New Hampshire) | 1,582.13 mi (2,546.20 km) |
| Irving to Portsmouth (Ohio) | 883.83 mi (1,422.38 km) |
| Irving to Portsmouth (Virginia) | 1,198.39 mi (1,928.62 km) |
| Irving to Post Falls (Idaho) | 1,462.09 mi (2,353.01 km) |
| Irving to Potomac (Maryland) | 1,182.20 mi (1,902.57 km) |
| Irving to Potomac Park (California) | 1,267.42 mi (2,039.71 km) |
| Irving to Pottstown (Pennsylvania) | 1,284.87 mi (2,067.81 km) |
