| Trinity to Ickenham | 4,396.38 mi (7,075.29 km) |
| Trinity to Ifield | 4,413.32 mi (7,102.55 km) |
| Trinity to Ilford | 4,418.74 mi (7,111.27 km) |
| Trinity to Ilfracombe | 4,246.23 mi (6,833.65 km) |
| Trinity to Ilkeston | 4,340.11 mi (6,984.74 km) |
| Trinity to Ilkley | 4,306.66 mi (6,930.90 km) |
| Trinity to Immingham | 4,375.10 mi (7,041.05 km) |
| Trinity to Ince-in-Makerfield | 4,280.29 mi (6,888.46 km) |
| Trinity to Inverness | 4,176.53 mi (6,721.48 km) |
| Trinity to Inverurie | 4,246.45 mi (6,834.00 km) |
| Trinity to Ipswich | 4,455.05 mi (7,169.71 km) |
| Trinity to Irlam | 4,288.64 mi (6,901.89 km) |
| Trinity to Irthlingborough | 4,377.90 mi (7,045.55 km) |
| Trinity to Irvine | 4,176.28 mi (6,721.08 km) |
| Trinity to Islington | 4,411.07 mi (7,098.93 km) |
