| Greenock to Gaeta | 1,310.01 mi (2,108.25 km) |
| Greenock to Gaggiano | 942.99 mi (1,517.59 km) |
| Greenock to Galatina | 1,506.27 mi (2,424.10 km) |
| Greenock to Galatone | 1,504.11 mi (2,420.62 km) |
| Greenock to Galbiate | 930.40 mi (1,497.33 km) |
| Greenock to Gallarate | 921.50 mi (1,483.02 km) |
| Greenock to Galliate | 929.36 mi (1,495.66 km) |
| Greenock to Gallipoli | 1,507.08 mi (2,425.41 km) |
| Greenock to Gambettola | 1,109.51 mi (1,785.58 km) |
| Greenock to Gambolo | 946.70 mi (1,523.57 km) |
| Greenock to Garbagnate Milanese | 934.49 mi (1,503.91 km) |
| Greenock to Gardone Val Trompia | 959.83 mi (1,544.69 km) |
| Greenock to Garlasco | 951.48 mi (1,531.25 km) |
| Greenock to Gassino Torinese | 926.91 mi (1,491.72 km) |
| Greenock to Gatteo | 1,111.91 mi (1,789.45 km) |
