| Upminster to Ickenham | 30.05 mi (48.37 km) |
| Upminster to Ifield | 35.83 mi (57.66 km) |
| Upminster to Ilford | 7.11 mi (11.44 km) |
| Upminster to Ilfracombe | 189.99 mi (305.77 km) |
| Upminster to Ilkeston | 117.96 mi (189.83 km) |
| Upminster to Ilkley | 185.24 mi (298.11 km) |
| Upminster to Immingham | 143.57 mi (231.05 km) |
| Upminster to Ince-in-Makerfield | 182.02 mi (292.93 km) |
| Upminster to Inverness | 446.59 mi (718.72 km) |
| Upminster to Inverurie | 409.33 mi (658.76 km) |
| Upminster to Ipswich | 52.00 mi (83.68 km) |
| Upminster to Irlam | 172.26 mi (277.23 km) |
| Upminster to Irthlingborough | 64.62 mi (104.00 km) |
| Upminster to Irvine | 345.44 mi (555.93 km) |
| Upminster to Islington | 15.23 mi (24.50 km) |
