| On Top of the World Designated Place to Ickenham | 4,334.58 mi (6,975.83 km) |
| On Top of the World Designated Place to Ifield | 4,351.73 mi (7,003.43 km) |
| On Top of the World Designated Place to Ilford | 4,356.89 mi (7,011.74 km) |
| On Top of the World Designated Place to Ilfracombe | 4,184.88 mi (6,734.92 km) |
| On Top of the World Designated Place to Ilkeston | 4,277.64 mi (6,884.19 km) |
| On Top of the World Designated Place to Ilkley | 4,243.74 mi (6,829.64 km) |
| On Top of the World Designated Place to Immingham | 4,312.24 mi (6,939.88 km) |
| On Top of the World Designated Place to Ince-in-Makerfield | 4,217.60 mi (6,787.58 km) |
| On Top of the World Designated Place to Inverness | 4,112.09 mi (6,617.77 km) |
| On Top of the World Designated Place to Inverurie | 4,182.04 mi (6,730.34 km) |
| On Top of the World Designated Place to Ipswich | 4,392.86 mi (7,069.62 km) |
| On Top of the World Designated Place to Irlam | 4,225.99 mi (6,801.07 km) |
| On Top of the World Designated Place to Irthlingborough | 4,315.71 mi (6,945.47 km) |
| On Top of the World Designated Place to Irvine | 4,112.68 mi (6,618.72 km) |
| On Top of the World Designated Place to Islington | 4,349.24 mi (6,999.43 km) |
