| Howard to Ickenham | 3,827.65 mi (6,160.01 km) |
| Howard to Ifield | 3,851.80 mi (6,198.88 km) |
| Howard to Ilford | 3,847.48 mi (6,191.93 km) |
| Howard to Ilfracombe | 3,701.28 mi (5,956.63 km) |
| Howard to Ilkeston | 3,747.94 mi (6,031.73 km) |
| Howard to Ilkley | 3,698.09 mi (5,951.50 km) |
| Howard to Immingham | 3,765.91 mi (6,060.64 km) |
| Howard to Ince-in-Makerfield | 3,682.37 mi (5,926.20 km) |
| Howard to Inverness | 3,506.80 mi (5,643.65 km) |
| Howard to Inverurie | 3,574.98 mi (5,753.37 km) |
| Howard to Ipswich | 3,869.16 mi (6,226.81 km) |
| Howard to Irlam | 3,691.87 mi (5,941.49 km) |
| Howard to Irthlingborough | 3,795.18 mi (6,107.75 km) |
| Howard to Irvine | 3,544.67 mi (5,704.59 km) |
| Howard to Islington | 3,840.97 mi (6,181.44 km) |
