| River Ridge to Ickenham | 4,618.27 mi (7,432.39 km) |
| River Ridge to Ifield | 4,638.20 mi (7,464.47 km) |
| River Ridge to Ilford | 4,639.88 mi (7,467.17 km) |
| River Ridge to Ilfracombe | 4,475.63 mi (7,202.83 km) |
| River Ridge to Ilkeston | 4,552.13 mi (7,325.94 km) |
| River Ridge to Ilkley | 4,511.71 mi (7,260.89 km) |
| River Ridge to Immingham | 4,580.63 mi (7,371.82 km) |
| River Ridge to Ince-in-Makerfield | 4,489.35 mi (7,224.90 km) |
| River Ridge to Inverness | 4,354.61 mi (7,008.06 km) |
| River Ridge to Inverurie | 4,424.52 mi (7,120.58 km) |
| River Ridge to Ipswich | 4,670.80 mi (7,516.92 km) |
| River Ridge to Irlam | 4,498.25 mi (7,239.23 km) |
| River Ridge to Irthlingborough | 4,594.09 mi (7,393.47 km) |
| River Ridge to Irvine | 4,370.45 mi (7,033.56 km) |
| River Ridge to Islington | 4,632.58 mi (7,455.42 km) |
