| Difficult Run to Portage (Michigan) | 488.81 mi (786.66 km) |
| Difficult Run to Portage (Wisconsin) | 705.94 mi (1,136.10 km) |
| Difficult Run to Portales (New Mexico) | 1,474.94 mi (2,373.68 km) |
| Difficult Run to Porterville (California) | 2,274.15 mi (3,659.89 km) |
| Difficult Run to Portland (Maine) | 493.44 mi (794.11 km) |
| Difficult Run to Portland (Oregon) | 2,330.97 mi (3,751.33 km) |
| Difficult Run to Portland (Tennessee) | 525.86 mi (846.29 km) |
| Difficult Run to Portland (Texas) | 1,375.96 mi (2,214.39 km) |
| Difficult Run to Portsmouth (New Hampshire) | 446.65 mi (718.81 km) |
| Difficult Run to Portsmouth (Ohio) | 301.41 mi (485.08 km) |
| Difficult Run to Portsmouth (Virginia) | 151.95 mi (244.54 km) |
| Difficult Run to Post Falls (Idaho) | 2,056.47 mi (3,309.57 km) |
| Difficult Run to Potomac (Maryland) | 11.31 mi (18.19 km) |
| Difficult Run to Potomac Park (California) | 2,285.64 mi (3,678.38 km) |
| Difficult Run to Pottstown (Pennsylvania) | 130.04 mi (209.28 km) |
