| Defiance to Ickenham | 3,835.41 mi (6,172.50 km) |
| Defiance to Ifield | 3,857.60 mi (6,208.21 km) |
| Defiance to Ilford | 3,856.20 mi (6,205.96 km) |
| Defiance to Ilfracombe | 3,700.57 mi (5,955.49 km) |
| Defiance to Ilkeston | 3,762.14 mi (6,054.57 km) |
| Defiance to Ilkley | 3,716.90 mi (5,981.78 km) |
| Defiance to Immingham | 3,785.57 mi (6,092.28 km) |
| Defiance to Ince-in-Makerfield | 3,697.71 mi (5,950.88 km) |
| Defiance to Inverness | 3,543.32 mi (5,702.42 km) |
| Defiance to Inverurie | 3,612.71 mi (5,814.10 km) |
| Defiance to Ipswich | 3,882.56 mi (6,248.38 km) |
| Defiance to Irlam | 3,706.94 mi (5,965.74 km) |
| Defiance to Irthlingborough | 3,806.91 mi (6,126.63 km) |
| Defiance to Irvine | 3,569.26 mi (5,744.17 km) |
| Defiance to Islington | 3,849.27 mi (6,194.81 km) |
