| Dundalk to Ickenham | 3,612.00 mi (5,812.95 km) |
| Dundalk to Ifield | 3,631.38 mi (5,844.14 km) |
| Dundalk to Ilford | 3,633.79 mi (5,848.02 km) |
| Dundalk to Ilfracombe | 3,467.90 mi (5,581.05 km) |
| Dundalk to Ilkeston | 3,548.06 mi (5,710.05 km) |
| Dundalk to Ilkley | 3,509.54 mi (5,648.05 km) |
| Dundalk to Immingham | 3,578.42 mi (5,758.91 km) |
| Dundalk to Ince-in-Makerfield | 3,485.98 mi (5,610.15 km) |
| Dundalk to Inverness | 3,362.36 mi (5,411.20 km) |
| Dundalk to Inverurie | 3,432.41 mi (5,523.94 km) |
| Dundalk to Ipswich | 3,665.94 mi (5,899.77 km) |
| Dundalk to Irlam | 3,494.74 mi (5,624.25 km) |
| Dundalk to Irthlingborough | 3,589.04 mi (5,775.99 km) |
| Dundalk to Irvine | 3,371.66 mi (5,426.16 km) |
| Dundalk to Islington | 3,626.40 mi (5,836.13 km) |
