| Mountain Ash to Ickenham | 126.01 mi (202.79 km) |
| Mountain Ash to Ifield | 142.04 mi (228.59 km) |
| Mountain Ash to Ilford | 148.88 mi (239.59 km) |
| Mountain Ash to Ilfracombe | 45.69 mi (73.53 km) |
| Mountain Ash to Ilkeston | 124.82 mi (200.87 km) |
| Mountain Ash to Ilkley | 168.10 mi (270.53 km) |
| Mountain Ash to Immingham | 188.08 mi (302.68 km) |
| Mountain Ash to Ince-in-Makerfield | 132.53 mi (213.29 km) |
| Mountain Ash to Inverness | 401.91 mi (646.82 km) |
| Mountain Ash to Inverurie | 388.89 mi (625.86 km) |
| Mountain Ash to Ipswich | 195.18 mi (314.11 km) |
| Mountain Ash to Irlam | 128.31 mi (206.50 km) |
| Mountain Ash to Irthlingborough | 125.71 mi (202.31 km) |
| Mountain Ash to Irvine | 277.14 mi (446.02 km) |
| Mountain Ash to Islington | 140.89 mi (226.74 km) |
