| Difficult Run to Germantown (Wisconsin) | 635.41 mi (1,022.59 km) |
| Difficult Run to Gibsonton (Florida) | 818.05 mi (1,316.52 km) |
| Difficult Run to Gig Harbor (Washington) | 2,320.36 mi (3,734.26 km) |
| Difficult Run to Gilbert (Arizona) | 1,946.74 mi (3,132.97 km) |
| Difficult Run to Gillette (Wyoming) | 1,493.33 mi (2,403.28 km) |
| Difficult Run to Gilroy (California) | 2,389.99 mi (3,846.32 km) |
| Difficult Run to Gladeview (Florida) | 917.97 mi (1,477.34 km) |
| Difficult Run to Gladstone (Missouri) | 922.32 mi (1,484.34 km) |
| Difficult Run to Gladstone (Oregon) | 2,329.17 mi (3,748.44 km) |
| Difficult Run to Glasgow (Delaware) | 98.31 mi (158.21 km) |
| Difficult Run to Glasgow (Kentucky) | 485.21 mi (780.87 km) |
| Difficult Run to Glassboro (New Jersey) | 131.69 mi (211.93 km) |
| Difficult Run to Glassmanor (Maryland) | 20.41 mi (32.84 km) |
| Difficult Run to Glen Allen (Virginia) | 85.69 mi (137.91 km) |
| Difficult Run to Glen Burnie (Maryland) | 43.43 mi (69.90 km) |
