| Severn to Ickenham | 3,626.25 mi (5,835.89 km) |
| Severn to Ifield | 3,645.63 mi (5,867.07 km) |
| Severn to Ilford | 3,648.04 mi (5,870.95 km) |
| Severn to Ilfracombe | 3,482.15 mi (5,603.98 km) |
| Severn to Ilkeston | 3,562.31 mi (5,732.98 km) |
| Severn to Ilkley | 3,523.78 mi (5,670.98 km) |
| Severn to Immingham | 3,592.66 mi (5,781.83 km) |
| Severn to Ince-in-Makerfield | 3,500.23 mi (5,633.08 km) |
| Severn to Inverness | 3,376.53 mi (5,434.00 km) |
| Severn to Inverurie | 3,446.58 mi (5,546.74 km) |
| Severn to Ipswich | 3,680.20 mi (5,922.71 km) |
| Severn to Irlam | 3,508.99 mi (5,647.18 km) |
| Severn to Irthlingborough | 3,603.29 mi (5,798.93 km) |
| Severn to Irvine | 3,385.88 mi (5,449.05 km) |
| Severn to Islington | 3,640.66 mi (5,859.07 km) |
