| Difficult Run to Fairmount (New York) | 291.71 mi (469.46 km) |
| Difficult Run to Fairview (California) | 2,401.07 mi (3,864.14 km) |
| Difficult Run to Fairview (New Jersey) | 221.35 mi (356.23 km) |
| Difficult Run to Fairview (Oregon) | 2,320.74 mi (3,734.86 km) |
| Difficult Run to Fairview Heights (Illinois) | 681.87 mi (1,097.36 km) |
| Difficult Run to Fairview Park (Ohio) | 295.56 mi (475.66 km) |
| Difficult Run to Fairview Shores (Florida) | 748.44 mi (1,204.50 km) |
| Difficult Run to Fairwood (Washington) | 2,298.88 mi (3,699.69 km) |
| Difficult Run to Fajardo (Puerto Rico) | 1,584.78 mi (2,550.46 km) |
| Difficult Run to Fall River (Massachusetts) | 382.00 mi (614.78 km) |
| Difficult Run to Fallbrook (California) | 2,239.79 mi (3,604.59 km) |
| Difficult Run to Falls Church (Virginia) | 9.32 mi (15.00 km) |
| Difficult Run to Fargo (North Dakota) | 1,124.99 mi (1,810.50 km) |
| Difficult Run to Faribault (Minnesota) | 901.70 mi (1,451.15 km) |
| Difficult Run to Farmers Branch (Texas) | 1,165.49 mi (1,875.67 km) |
