| Difficult Run to Homer Glen (Illinois) | 588.99 mi (947.88 km) |
| Difficult Run to Homestead (Florida) | 945.64 mi (1,521.85 km) |
| Difficult Run to Homewood (Alabama) | 647.25 mi (1,041.65 km) |
| Difficult Run to Homewood (Illinois) | 573.77 mi (923.39 km) |
| Difficult Run to Homosassa Springs (Florida) | 757.75 mi (1,219.48 km) |
| Difficult Run to Honeygo (Maryland) | 60.30 mi (97.04 km) |
| Difficult Run to Honolulu (Hawaii) | 4,810.99 mi (7,742.53 km) |
| Difficult Run to Hoover (Alabama) | 650.83 mi (1,047.41 km) |
| Difficult Run to Hopatcong (New Jersey) | 200.96 mi (323.41 km) |
| Difficult Run to Hope Mills (North Carolina) | 285.79 mi (459.94 km) |
| Difficult Run to Hopewell (Virginia) | 111.28 mi (179.09 km) |
| Difficult Run to Hopkins (Minnesota) | 922.40 mi (1,484.46 km) |
| Difficult Run to Hopkinsville (Kentucky) | 570.29 mi (917.80 km) |
| Difficult Run to Horizon City (Texas) | 1,693.29 mi (2,725.09 km) |
| Difficult Run to Horizon West (Florida) | 762.97 mi (1,227.88 km) |
