| Hemel Hempstead to Portage (Michigan) | 3,834.06 mi (6,170.33 km) |
| Hemel Hempstead to Portage (Wisconsin) | 3,917.99 mi (6,305.39 km) |
| Hemel Hempstead to Portales (New Mexico) | 4,899.96 mi (7,885.72 km) |
| Hemel Hempstead to Porterville (California) | 5,327.90 mi (8,574.43 km) |
| Hemel Hempstead to Portland (Maine) | 3,165.72 mi (5,094.74 km) |
| Hemel Hempstead to Portland (Oregon) | 4,888.89 mi (7,867.91 km) |
| Hemel Hempstead to Portland (Tennessee) | 4,134.83 mi (6,654.37 km) |
| Hemel Hempstead to Portland (Texas) | 5,003.57 mi (8,052.46 km) |
| Hemel Hempstead to Portsmouth (New Hampshire) | 3,211.71 mi (5,168.75 km) |
| Hemel Hempstead to Portsmouth (Ohio) | 3,890.04 mi (6,260.41 km) |
| Hemel Hempstead to Portsmouth (Virginia) | 3,711.52 mi (5,973.11 km) |
| Hemel Hempstead to Post Falls (Idaho) | 4,608.99 mi (7,417.45 km) |
| Hemel Hempstead to Potomac (Maryland) | 3,646.96 mi (5,869.22 km) |
| Hemel Hempstead to Potomac Park (California) | 5,365.95 mi (8,635.66 km) |
| Hemel Hempstead to Pottstown (Pennsylvania) | 3,528.81 mi (5,679.07 km) |
