| Difficult Run to Princeton (Florida) | 940.11 mi (1,512.96 km) |
| Difficult Run to Princeton (New Jersey) | 174.36 mi (280.61 km) |
| Difficult Run to Princeton (Texas) | 1,138.32 mi (1,831.95 km) |
| Difficult Run to Princeton Meadows (New Jersey) | 178.11 mi (286.64 km) |
| Difficult Run to Prineville (Oregon) | 2,251.99 mi (3,624.23 km) |
| Difficult Run to Prior Lake (Minnesota) | 919.13 mi (1,479.20 km) |
| Difficult Run to Progress (Pennsylvania) | 99.67 mi (160.40 km) |
| Difficult Run to Prospect Heights (Illinois) | 597.71 mi (961.93 km) |
| Difficult Run to Prosper (Texas) | 1,152.35 mi (1,854.53 km) |
| Difficult Run to Providence (Rhode Island) | 371.55 mi (597.96 km) |
| Difficult Run to Provo (Utah) | 1,817.62 mi (2,925.17 km) |
| Difficult Run to Prunedale (California) | 2,397.73 mi (3,858.77 km) |
| Difficult Run to Pueblo (Colorado) | 1,467.66 mi (2,361.97 km) |
| Difficult Run to Pueblo West (Colorado) | 1,472.76 mi (2,370.18 km) |
| Difficult Run to Pullman (Washington) | 2,065.45 mi (3,324.02 km) |
