| Mentor to Ickenham | 3,698.32 mi (5,951.87 km) |
| Mentor to Ifield | 3,719.93 mi (5,986.65 km) |
| Mentor to Ilford | 3,719.35 mi (5,985.72 km) |
| Mentor to Ilfracombe | 3,561.36 mi (5,731.46 km) |
| Mentor to Ilkeston | 3,626.98 mi (5,837.07 km) |
| Mentor to Ilkley | 3,583.18 mi (5,766.58 km) |
| Mentor to Immingham | 3,651.98 mi (5,877.30 km) |
| Mentor to Ince-in-Makerfield | 3,562.99 mi (5,734.08 km) |
| Mentor to Inverness | 3,415.45 mi (5,496.63 km) |
| Mentor to Inverurie | 3,485.10 mi (5,608.73 km) |
| Mentor to Ipswich | 3,747.00 mi (6,030.22 km) |
| Mentor to Irlam | 3,572.13 mi (5,748.79 km) |
| Mentor to Irthlingborough | 3,670.98 mi (5,907.88 km) |
| Mentor to Irvine | 3,437.54 mi (5,532.19 km) |
| Mentor to Islington | 3,712.32 mi (5,974.39 km) |
