| Difficult Run to Haverhill (Massachusetts) | 422.89 mi (680.58 km) |
| Difficult Run to Havre de Grace (Maryland) | 79.66 mi (128.21 km) |
| Difficult Run to Hawaiian Gardens (California) | 2,273.76 mi (3,659.26 km) |
| Difficult Run to Hawaiian Paradise Park (Hawaii) | 4,728.01 mi (7,609.00 km) |
| Difficult Run to Hawthorne (California) | 2,286.43 mi (3,679.65 km) |
| Difficult Run to Hawthorne (New Jersey) | 220.73 mi (355.22 km) |
| Difficult Run to Hayden (Idaho) | 2,050.37 mi (3,299.76 km) |
| Difficult Run to Hayesville (Oregon) | 2,350.40 mi (3,782.60 km) |
| Difficult Run to Hays (Kansas) | 1,178.88 mi (1,897.23 km) |
| Difficult Run to Haysville (Kansas) | 1,087.49 mi (1,750.14 km) |
| Difficult Run to Hayward (California) | 2,403.44 mi (3,867.96 km) |
| Difficult Run to Hazel Crest (Illinois) | 575.46 mi (926.12 km) |
| Difficult Run to Hazel Dell (Washington) | 2,330.37 mi (3,750.36 km) |
| Difficult Run to Hazel Park (Michigan) | 388.81 mi (625.73 km) |
| Difficult Run to Hazelwood (Missouri) | 701.29 mi (1,128.62 km) |
