| San Gwann to Ifield | 1,277.97 mi (2,056.69 km) |
| San Gwann to Ilford | 1,293.01 mi (2,080.91 km) |
| San Gwann to Ilfracombe | 1,400.59 mi (2,254.04 km) |
| San Gwann to Ilkeston | 1,406.00 mi (2,262.74 km) |
| San Gwann to Ilkley | 1,470.49 mi (2,366.53 km) |
| San Gwann to Immingham | 1,413.64 mi (2,275.04 km) |
| San Gwann to Ince-in-Makerfield | 1,470.44 mi (2,366.44 km) |
| San Gwann to Inverness | 1,720.99 mi (2,769.66 km) |
| San Gwann to Inverurie | 1,669.09 mi (2,686.13 km) |
| San Gwann to Ipswich | 1,292.99 mi (2,080.86 km) |
| San Gwann to Irlam | 1,460.70 mi (2,350.78 km) |
| San Gwann to Irthlingborough | 1,352.94 mi (2,177.35 km) |
| San Gwann to Irvine | 1,632.95 mi (2,627.98 km) |
| San Gwann to Islington | 1,297.40 mi (2,087.96 km) |
| San Gwann to Iver | 1,307.29 mi (2,103.88 km) |
