| Harrow to Gorlice | 948.62 mi (1,526.66 km) |
| Harrow to Gorzow Wielkopolski | 664.51 mi (1,069.43 km) |
| Harrow to Gostyn | 741.36 mi (1,193.10 km) |
| Harrow to Gostynin | 842.12 mi (1,355.26 km) |
| Harrow to Grajewo | 962.63 mi (1,549.20 km) |
| Harrow to Grodek Nad Dunajcem | 928.09 mi (1,493.62 km) |
| Harrow to Grodzisk Mazowiecki | 893.06 mi (1,437.23 km) |
| Harrow to Grodzisk Wielkopolski | 712.22 mi (1,146.21 km) |
| Harrow to Grojec | 904.93 mi (1,456.35 km) |
| Harrow to Grudziadz | 810.95 mi (1,305.09 km) |
| Harrow to Gryfice | 668.29 mi (1,075.50 km) |
| Harrow to Gryfino | 634.43 mi (1,021.02 km) |
| Harrow to Gubin | 643.43 mi (1,035.51 km) |
| Harrow to Hajnowka | 1,012.71 mi (1,629.81 km) |
| Harrow to Hrubieszow | 1,045.53 mi (1,682.61 km) |
