| Alsip to Ickenham | 3,947.47 mi (6,352.83 km) |
| Alsip to Ifield | 3,970.57 mi (6,390.02 km) |
| Alsip to Ilford | 3,967.84 mi (6,385.62 km) |
| Alsip to Ilfracombe | 3,816.32 mi (6,141.77 km) |
| Alsip to Ilkeston | 3,871.14 mi (6,230.00 km) |
| Alsip to Ilkley | 3,823.69 mi (6,153.64 km) |
| Alsip to Immingham | 3,892.03 mi (6,263.62 km) |
| Alsip to Ince-in-Makerfield | 3,806.11 mi (6,125.34 km) |
| Alsip to Inverness | 3,641.36 mi (5,860.20 km) |
| Alsip to Inverurie | 3,710.22 mi (5,971.03 km) |
| Alsip to Ipswich | 3,992.06 mi (6,424.60 km) |
| Alsip to Irlam | 3,815.48 mi (6,140.42 km) |
| Alsip to Irthlingborough | 3,917.11 mi (6,303.98 km) |
| Alsip to Irvine | 3,673.14 mi (5,911.34 km) |
| Alsip to Islington | 3,961.09 mi (6,374.77 km) |
