| Mentana to Ifield | 874.43 mi (1,407.27 km) |
| Mentana to Ilford | 885.16 mi (1,424.53 km) |
| Mentana to Ilfracombe | 1,014.15 mi (1,632.12 km) |
| Mentana to Ilkeston | 995.21 mi (1,601.64 km) |
| Mentana to Ilkley | 1,056.52 mi (1,700.31 km) |
| Mentana to Immingham | 996.02 mi (1,602.93 km) |
| Mentana to Ince-in-Makerfield | 1,061.01 mi (1,707.53 km) |
| Mentana to Inverness | 1,299.40 mi (2,091.18 km) |
| Mentana to Inverurie | 1,244.56 mi (2,002.92 km) |
| Mentana to Ipswich | 877.81 mi (1,412.70 km) |
| Mentana to Irlam | 1,051.20 mi (1,691.74 km) |
| Mentana to Irthlingborough | 943.24 mi (1,517.99 km) |
| Mentana to Irvine | 1,219.28 mi (1,962.24 km) |
| Mentana to Islington | 890.46 mi (1,433.05 km) |
| Mentana to Iver | 902.28 mi (1,452.08 km) |
