| Plum to Ickenham | 3,688.42 mi (5,935.93 km) |
| Plum to Ifield | 3,709.17 mi (5,969.33 km) |
| Plum to Ilford | 3,709.77 mi (5,970.29 km) |
| Plum to Ilfracombe | 3,548.49 mi (5,710.74 km) |
| Plum to Ilkeston | 3,619.92 mi (5,825.70 km) |
| Plum to Ilkley | 3,578.14 mi (5,758.46 km) |
| Plum to Immingham | 3,647.05 mi (5,869.36 km) |
| Plum to Ince-in-Makerfield | 3,556.61 mi (5,723.81 km) |
| Plum to Inverness | 3,418.21 mi (5,501.08 km) |
| Plum to Inverurie | 3,488.10 mi (5,613.56 km) |
| Plum to Ipswich | 3,739.22 mi (6,017.70 km) |
| Plum to Irlam | 3,565.61 mi (5,738.30 km) |
| Plum to Irthlingborough | 3,662.78 mi (5,894.67 km) |
| Plum to Irvine | 3,435.37 mi (5,528.69 km) |
| Plum to Islington | 3,702.59 mi (5,958.74 km) |
