| Niles to Ickenham | 3,933.64 mi (6,330.57 km) |
| Niles to Ifield | 3,956.88 mi (6,367.98 km) |
| Niles to Ilford | 3,953.94 mi (6,363.25 km) |
| Niles to Ilfracombe | 3,803.07 mi (6,120.46 km) |
| Niles to Ilkeston | 3,856.87 mi (6,207.03 km) |
| Niles to Ilkley | 3,809.11 mi (6,130.16 km) |
| Niles to Immingham | 3,877.38 mi (6,240.05 km) |
| Niles to Ince-in-Makerfield | 3,791.76 mi (6,102.24 km) |
| Niles to Inverness | 3,625.60 mi (5,834.83 km) |
| Niles to Inverurie | 3,694.39 mi (5,945.54 km) |
| Niles to Ipswich | 3,977.84 mi (6,401.72 km) |
| Niles to Irlam | 3,801.14 mi (6,117.35 km) |
| Niles to Irthlingborough | 3,903.00 mi (6,281.27 km) |
| Niles to Irvine | 3,658.16 mi (5,887.24 km) |
| Niles to Islington | 3,947.22 mi (6,352.44 km) |
