| Difficult Run to Hormigueros (Puerto Rico) | 1,560.21 mi (2,510.91 km) |
| Difficult Run to Horn Lake (Mississippi) | 752.02 mi (1,210.26 km) |
| Difficult Run to Hot Springs (Arkansas) | 920.36 mi (1,481.18 km) |
| Difficult Run to Hot Springs Village (Arkansas) | 911.26 mi (1,466.53 km) |
| Difficult Run to Houma (Louisiana) | 996.55 mi (1,603.79 km) |
| Difficult Run to Houston (Texas) | 1,203.25 mi (1,936.44 km) |
| Difficult Run to Howard (Wisconsin) | 677.58 mi (1,090.46 km) |
| Difficult Run to Huber Heights (Ohio) | 367.25 mi (591.04 km) |
| Difficult Run to Hudson (Florida) | 790.17 mi (1,271.65 km) |
| Difficult Run to Hudson (Ohio) | 270.04 mi (434.59 km) |
| Difficult Run to Hudson (Wisconsin) | 892.78 mi (1,436.79 km) |
| Difficult Run to Hueytown (Alabama) | 658.55 mi (1,059.83 km) |
| Difficult Run to Hugo (Minnesota) | 908.46 mi (1,462.02 km) |
| Difficult Run to Humacao (Puerto Rico) | 1,592.00 mi (2,562.07 km) |
| Difficult Run to Humble (Texas) | 1,188.90 mi (1,913.35 km) |
