| Isernia to Giovinazzo | 129.09 mi (207.75 km) |
| Isernia to Giugliano in Campania | 46.41 mi (74.69 km) |
| Isernia to Giulianova | 80.64 mi (129.78 km) |
| Isernia to Giussano | 378.26 mi (608.74 km) |
| Isernia to Goito | 309.20 mi (497.61 km) |
| Isernia to Gonzaga | 288.27 mi (463.93 km) |
| Isernia to Gorgonzola | 363.80 mi (585.48 km) |
| Isernia to Gorizia | 300.82 mi (484.12 km) |
| Isernia to Gragnano | 64.29 mi (103.47 km) |
| Isernia to Grammichele | 303.93 mi (489.12 km) |
| Isernia to Granarolo del l'Emilia | 247.53 mi (398.36 km) |
| Isernia to Gravina in Puglia | 125.51 mi (201.99 km) |
| Isernia to Grezzana | 314.85 mi (506.70 km) |
| Isernia to Gricignano d'Aversa | 41.75 mi (67.19 km) |
| Isernia to Grosseto | 179.72 mi (289.23 km) |
