| Houthulst to Portage (Michigan) | 3,989.56 mi (6,420.57 km) |
| Houthulst to Portage (Wisconsin) | 4,071.93 mi (6,553.13 km) |
| Houthulst to Portales (New Mexico) | 5,053.00 mi (8,132.02 km) |
| Houthulst to Porterville (California) | 5,470.61 mi (8,804.10 km) |
| Houthulst to Portland (Maine) | 3,322.63 mi (5,347.25 km) |
| Houthulst to Portland (Oregon) | 5,021.51 mi (8,081.33 km) |
| Houthulst to Portland (Tennessee) | 4,291.45 mi (6,906.41 km) |
| Houthulst to Portland (Texas) | 5,160.02 mi (8,304.24 km) |
| Houthulst to Portsmouth (New Hampshire) | 3,368.62 mi (5,421.26 km) |
| Houthulst to Portsmouth (Ohio) | 4,046.72 mi (6,512.57 km) |
| Houthulst to Portsmouth (Virginia) | 3,868.23 mi (6,225.32 km) |
| Houthulst to Post Falls (Idaho) | 4,744.60 mi (7,635.70 km) |
| Houthulst to Potomac (Maryland) | 3,803.87 mi (6,121.73 km) |
| Houthulst to Potomac Park (California) | 5,509.15 mi (8,866.13 km) |
| Houthulst to Pottstown (Pennsylvania) | 3,685.72 mi (5,931.59 km) |
