| Keystone to Ickenham | 4,396.43 mi (7,075.38 km) |
| Keystone to Ifield | 4,413.33 mi (7,102.57 km) |
| Keystone to Ilford | 4,418.80 mi (7,111.37 km) |
| Keystone to Ilfracombe | 4,246.21 mi (6,833.61 km) |
| Keystone to Ilkeston | 4,340.29 mi (6,985.02 km) |
| Keystone to Ilkley | 4,306.92 mi (6,931.32 km) |
| Keystone to Immingham | 4,375.35 mi (7,041.45 km) |
| Keystone to Ince-in-Makerfield | 4,280.51 mi (6,888.81 km) |
| Keystone to Inverness | 4,177.11 mi (6,722.42 km) |
| Keystone to Inverurie | 4,247.03 mi (6,834.93 km) |
| Keystone to Ipswich | 4,455.17 mi (7,169.90 km) |
| Keystone to Irlam | 4,288.84 mi (6,902.23 km) |
| Keystone to Irthlingborough | 4,378.03 mi (7,045.75 km) |
| Keystone to Irvine | 4,176.68 mi (6,721.72 km) |
| Keystone to Islington | 4,411.12 mi (7,099.02 km) |
