| Glenmont to Ickenham | 3,643.52 mi (5,863.68 km) |
| Glenmont to Ifield | 3,662.97 mi (5,894.97 km) |
| Glenmont to Ilford | 3,665.29 mi (5,898.71 km) |
| Glenmont to Ilfracombe | 3,499.61 mi (5,632.07 km) |
| Glenmont to Ilkeston | 3,579.34 mi (5,760.39 km) |
| Glenmont to Ilkley | 3,540.64 mi (5,698.10 km) |
| Glenmont to Immingham | 3,609.53 mi (5,808.97 km) |
| Glenmont to Ince-in-Makerfield | 3,517.19 mi (5,660.37 km) |
| Glenmont to Inverness | 3,392.66 mi (5,459.96 km) |
| Glenmont to Inverurie | 3,462.71 mi (5,572.70 km) |
| Glenmont to Ipswich | 3,697.31 mi (5,950.24 km) |
| Glenmont to Irlam | 3,525.97 mi (5,674.50 km) |
| Glenmont to Irthlingborough | 3,620.42 mi (5,826.50 km) |
| Glenmont to Irvine | 3,402.46 mi (5,475.73 km) |
| Glenmont to Islington | 3,657.91 mi (5,886.84 km) |
