| Hackettstown to Ickenham | 3,474.28 mi (5,591.32 km) |
| Hackettstown to Ifield | 3,493.89 mi (5,622.88 km) |
| Hackettstown to Ilford | 3,496.00 mi (5,626.28 km) |
| Hackettstown to Ilfracombe | 3,330.87 mi (5,360.52 km) |
| Hackettstown to Ilkeston | 3,409.64 mi (5,487.29 km) |
| Hackettstown to Ilkley | 3,370.68 mi (5,424.59 km) |
| Hackettstown to Immingham | 3,439.58 mi (5,535.47 km) |
| Hackettstown to Ince-in-Makerfield | 3,347.38 mi (5,387.09 km) |
| Hackettstown to Inverness | 3,222.29 mi (5,185.77 km) |
| Hackettstown to Inverurie | 3,292.34 mi (5,298.51 km) |
| Hackettstown to Ipswich | 3,527.75 mi (5,677.37 km) |
| Hackettstown to Irlam | 3,356.18 mi (5,401.25 km) |
| Hackettstown to Irthlingborough | 3,450.90 mi (5,553.68 km) |
| Hackettstown to Irvine | 3,232.23 mi (5,201.77 km) |
| Hackettstown to Islington | 3,488.65 mi (5,614.44 km) |
