| Willebroek to Portage (Michigan) | 4,040.26 mi (6,502.17 km) |
| Willebroek to Portage (Wisconsin) | 4,120.44 mi (6,631.20 km) |
| Willebroek to Portales (New Mexico) | 5,100.33 mi (8,208.19 km) |
| Willebroek to Porterville (California) | 5,508.79 mi (8,865.54 km) |
| Willebroek to Portland (Maine) | 3,377.47 mi (5,435.52 km) |
| Willebroek to Portland (Oregon) | 5,052.92 mi (8,131.89 km) |
| Willebroek to Portland (Tennessee) | 4,344.56 mi (6,991.89 km) |
| Willebroek to Portland (Texas) | 5,212.59 mi (8,388.86 km) |
| Willebroek to Portsmouth (New Hampshire) | 3,423.65 mi (5,509.82 km) |
| Willebroek to Portsmouth (Ohio) | 4,100.09 mi (6,598.46 km) |
| Willebroek to Portsmouth (Virginia) | 3,924.49 mi (6,315.86 km) |
| Willebroek to Post Falls (Idaho) | 4,778.01 mi (7,689.46 km) |
| Willebroek to Potomac (Maryland) | 3,858.96 mi (6,210.40 km) |
| Willebroek to Potomac Park (California) | 5,547.70 mi (8,928.16 km) |
| Willebroek to Pottstown (Pennsylvania) | 3,740.71 mi (6,020.09 km) |
