| Harmanli to Ifield | 1,383.81 mi (2,227.02 km) |
| Harmanli to Ilford | 1,380.96 mi (2,222.43 km) |
| Harmanli to Ilfracombe | 1,549.16 mi (2,493.13 km) |
| Harmanli to Ilkeston | 1,469.11 mi (2,364.31 km) |
| Harmanli to Ilkley | 1,512.51 mi (2,434.15 km) |
| Harmanli to Immingham | 1,443.79 mi (2,323.56 km) |
| Harmanli to Ince-in-Makerfield | 1,532.71 mi (2,466.65 km) |
| Harmanli to Inverness | 1,698.11 mi (2,732.84 km) |
| Harmanli to Inverurie | 1,630.76 mi (2,624.46 km) |
| Harmanli to Ipswich | 1,349.86 mi (2,172.39 km) |
| Harmanli to Irlam | 1,523.62 mi (2,452.03 km) |
| Harmanli to Irthlingborough | 1,426.47 mi (2,295.68 km) |
| Harmanli to Irvine | 1,661.13 mi (2,673.32 km) |
| Harmanli to Islington | 1,388.34 mi (2,234.32 km) |
| Harmanli to Iver | 1,404.38 mi (2,260.12 km) |
