| Boulogne-sur-Mer to Grottaglie | 1,035.31 mi (1,666.18 km) |
| Boulogne-sur-Mer to Grottammare | 786.04 mi (1,265.00 km) |
| Boulogne-sur-Mer to Grugliasco | 478.35 mi (769.84 km) |
| Boulogne-sur-Mer to Grumo Appula | 984.83 mi (1,584.92 km) |
| Boulogne-sur-Mer to Grumo Nevano | 907.91 mi (1,461.14 km) |
| Boulogne-sur-Mer to Gualdo Tadino | 736.88 mi (1,185.89 km) |
| Boulogne-sur-Mer to Guardiagrele | 838.54 mi (1,349.49 km) |
| Boulogne-sur-Mer to Guastalla | 580.15 mi (933.67 km) |
| Boulogne-sur-Mer to Gubbio | 723.62 mi (1,164.56 km) |
| Boulogne-sur-Mer to Guspini | 844.73 mi (1,359.46 km) |
| Boulogne-sur-Mer to Gussago | 528.71 mi (850.88 km) |
| Boulogne-sur-Mer to Iesi | 737.56 mi (1,186.99 km) |
| Boulogne-sur-Mer to Iesolo | 621.46 mi (1,000.14 km) |
| Boulogne-sur-Mer to Iglesias | 856.77 mi (1,378.84 km) |
| Boulogne-sur-Mer to Imola | 643.80 mi (1,036.10 km) |
