| Effingham to Ickenham | 4,099.01 mi (6,596.71 km) |
| Effingham to Ifield | 4,121.46 mi (6,632.84 km) |
| Effingham to Ilford | 4,119.68 mi (6,629.98 km) |
| Effingham to Ilfracombe | 3,965.11 mi (6,381.23 km) |
| Effingham to Ilkeston | 4,024.79 mi (6,477.27 km) |
| Effingham to Ilkley | 3,978.81 mi (6,403.27 km) |
| Effingham to Immingham | 4,047.37 mi (6,513.61 km) |
| Effingham to Ince-in-Makerfield | 3,960.15 mi (6,373.24 km) |
| Effingham to Inverness | 3,801.73 mi (6,118.29 km) |
| Effingham to Inverurie | 3,870.91 mi (6,229.63 km) |
| Effingham to Ipswich | 4,145.40 mi (6,671.37 km) |
| Effingham to Irlam | 3,969.43 mi (6,388.18 km) |
| Effingham to Irthlingborough | 4,069.95 mi (6,549.95 km) |
| Effingham to Irvine | 3,830.07 mi (6,163.90 km) |
| Effingham to Islington | 4,112.80 mi (6,618.92 km) |
