| Barstow to Portage (Michigan) | 1,762.74 mi (2,836.86 km) |
| Barstow to Portage (Wisconsin) | 1,584.56 mi (2,550.11 km) |
| Barstow to Portales (New Mexico) | 780.22 mi (1,255.65 km) |
| Barstow to Porterville (California) | 139.11 mi (223.88 km) |
| Barstow to Portland (Maine) | 2,539.61 mi (4,087.10 km) |
| Barstow to Portland (Oregon) | 793.85 mi (1,277.58 km) |
| Barstow to Portland (Tennessee) | 1,708.99 mi (2,750.36 km) |
| Barstow to Portland (Texas) | 1,256.13 mi (2,021.54 km) |
| Barstow to Portsmouth (New Hampshire) | 2,515.97 mi (4,049.06 km) |
| Barstow to Portsmouth (Ohio) | 1,894.44 mi (3,048.80 km) |
| Barstow to Portsmouth (Virginia) | 2,265.67 mi (3,646.24 km) |
| Barstow to Post Falls (Idaho) | 888.23 mi (1,429.46 km) |
| Barstow to Potomac (Maryland) | 2,201.75 mi (3,543.38 km) |
| Barstow to Potomac Park (California) | 113.71 mi (183.00 km) |
| Barstow to Pottstown (Pennsylvania) | 2,277.08 mi (3,664.60 km) |
