| Southwater to Ickenham | 37.14 mi (59.77 km) |
| Southwater to Ifield | 9.34 mi (15.02 km) |
| Southwater to Ilford | 41.46 mi (66.72 km) |
| Southwater to Ilfracombe | 163.88 mi (263.74 km) |
| Southwater to Ilkeston | 140.55 mi (226.20 km) |
| Southwater to Ilkley | 209.76 mi (337.58 km) |
| Southwater to Immingham | 179.05 mi (288.15 km) |
| Southwater to Ince-in-Makerfield | 198.08 mi (318.78 km) |
| Southwater to Inverness | 472.34 mi (760.15 km) |
| Southwater to Inverurie | 439.93 mi (707.99 km) |
| Southwater to Ipswich | 96.54 mi (155.36 km) |
| Southwater to Irlam | 188.80 mi (303.85 km) |
| Southwater to Irthlingborough | 90.53 mi (145.69 km) |
| Southwater to Irvine | 363.81 mi (585.49 km) |
| Southwater to Islington | 37.53 mi (60.40 km) |
