| Merthyr Tudful to Glenview (Illinois) | 3,813.69 mi (6,137.55 km) |
| Merthyr Tudful to Gloucester (Massachusetts) | 3,106.98 mi (5,000.19 km) |
| Merthyr Tudful to Gloucester City (New Jersey) | 3,404.34 mi (5,478.76 km) |
| Merthyr Tudful to Gloucester Point (Virginia) | 3,578.04 mi (5,758.29 km) |
| Merthyr Tudful to Gloversville (New York) | 3,238.84 mi (5,212.41 km) |
| Merthyr Tudful to Godfrey (Illinois) | 4,052.25 mi (6,521.47 km) |
| Merthyr Tudful to Gold Canyon (Arizona) | 5,129.30 mi (8,254.81 km) |
| Merthyr Tudful to Golden (Colorado) | 4,570.39 mi (7,355.33 km) |
| Merthyr Tudful to Golden Gate (Florida) | 4,330.87 mi (6,969.86 km) |
| Merthyr Tudful to Golden Glades (Florida) | 4,280.92 mi (6,889.48 km) |
| Merthyr Tudful to Golden Valley (Minnesota) | 3,887.79 mi (6,256.80 km) |
| Merthyr Tudful to Goldenrod (Florida) | 4,191.87 mi (6,746.16 km) |
| Merthyr Tudful to Goldsboro (North Carolina) | 3,726.32 mi (5,996.93 km) |
| Merthyr Tudful to Goleta (California) | 5,355.19 mi (8,618.34 km) |
| Merthyr Tudful to Gonzales (Louisiana) | 4,510.93 mi (7,259.64 km) |
