| Didcot to Grottaferrata | 942.88 mi (1,517.41 km) |
| Didcot to Grottaglie | 1,171.48 mi (1,885.31 km) |
| Didcot to Grottammare | 921.77 mi (1,483.45 km) |
| Didcot to Grugliasco | 605.87 mi (975.06 km) |
| Didcot to Grumo Appula | 1,120.88 mi (1,803.88 km) |
| Didcot to Grumo Nevano | 1,041.07 mi (1,675.44 km) |
| Didcot to Gualdo Tadino | 871.71 mi (1,402.87 km) |
| Didcot to Guardiagrele | 973.56 mi (1,566.79 km) |
| Didcot to Guastalla | 715.12 mi (1,150.87 km) |
| Didcot to Gubbio | 858.36 mi (1,381.39 km) |
| Didcot to Guspini | 959.23 mi (1,543.73 km) |
| Didcot to Gussago | 664.35 mi (1,069.17 km) |
| Didcot to Iesi | 873.38 mi (1,405.57 km) |
| Didcot to Iesolo | 759.05 mi (1,221.58 km) |
| Didcot to Iglesias | 970.33 mi (1,561.60 km) |
