| Merthyr Tudful to Gaeta | 1,080.97 mi (1,739.66 km) |
| Merthyr Tudful to Gaggiano | 715.19 mi (1,150.99 km) |
| Merthyr Tudful to Galatina | 1,299.57 mi (2,091.46 km) |
| Merthyr Tudful to Galatone | 1,296.67 mi (2,086.79 km) |
| Merthyr Tudful to Galbiate | 709.95 mi (1,142.55 km) |
| Merthyr Tudful to Gallarate | 694.42 mi (1,117.55 km) |
| Merthyr Tudful to Galliate | 699.54 mi (1,125.80 km) |
| Merthyr Tudful to Gallipoli | 1,298.54 mi (2,089.79 km) |
| Merthyr Tudful to Gambettola | 895.11 mi (1,440.53 km) |
| Merthyr Tudful to Gambolo | 715.95 mi (1,152.22 km) |
| Merthyr Tudful to Garbagnate Milanese | 708.93 mi (1,140.91 km) |
| Merthyr Tudful to Gardone Val Trompia | 744.84 mi (1,198.70 km) |
| Merthyr Tudful to Garlasco | 720.57 mi (1,159.65 km) |
| Merthyr Tudful to Gassino Torinese | 686.15 mi (1,104.26 km) |
| Merthyr Tudful to Gatteo | 897.73 mi (1,444.75 km) |
