| Castellanza to Gavirate | 18.38 mi (29.59 km) |
| Castellanza to Gavorrano | 210.88 mi (339.37 km) |
| Castellanza to Gela | 652.31 mi (1,049.79 km) |
| Castellanza to Gemona del Friuli | 208.49 mi (335.53 km) |
| Castellanza to Genoa | 83.31 mi (134.08 km) |
| Castellanza to Genzano di Roma | 330.20 mi (531.40 km) |
| Castellanza to Gessate | 26.20 mi (42.16 km) |
| Castellanza to Ghedi | 68.46 mi (110.18 km) |
| Castellanza to Giarre | 633.43 mi (1,019.40 km) |
| Castellanza to Giaveno | 85.03 mi (136.85 km) |
| Castellanza to Giffoni Valle Piana | 454.77 mi (731.89 km) |
| Castellanza to Ginosa | 530.60 mi (853.93 km) |
| Castellanza to Gioia del Colle | 523.40 mi (842.33 km) |
| Castellanza to Gioia Tauro | 612.18 mi (985.21 km) |
| Castellanza to Giovinazzo | 495.44 mi (797.34 km) |
