| Difficult Run to Greenwood Village (Colorado) | 1,469.78 mi (2,365.38 km) |
| Difficult Run to Greer (South Carolina) | 384.56 mi (618.89 km) |
| Difficult Run to Grenada (Mississippi) | 777.80 mi (1,251.75 km) |
| Difficult Run to Gresham (Oregon) | 2,321.12 mi (3,735.47 km) |
| Difficult Run to Gretna (Louisiana) | 952.46 mi (1,532.83 km) |
| Difficult Run to Griffin (Georgia) | 549.75 mi (884.74 km) |
| Difficult Run to Griffith (Indiana) | 561.37 mi (903.44 km) |
| Difficult Run to Grimes (Iowa) | 886.33 mi (1,426.41 km) |
| Difficult Run to Grosse Pointe Park (Michigan) | 378.50 mi (609.14 km) |
| Difficult Run to Grosse Pointe Woods (Michigan) | 379.72 mi (611.10 km) |
| Difficult Run to Grove City (Ohio) | 312.68 mi (503.21 km) |
| Difficult Run to Groveland (Florida) | 755.90 mi (1,216.50 km) |
| Difficult Run to Grover Beach (California) | 2,379.38 mi (3,829.24 km) |
| Difficult Run to Groves (Texas) | 1,126.19 mi (1,812.43 km) |
| Difficult Run to Groveton (Virginia) | 16.58 mi (26.68 km) |
