| Tigard to Ickenham | 4,910.05 mi (7,901.97 km) |
| Tigard to Ifield | 4,939.99 mi (7,950.15 km) |
| Tigard to Ilford | 4,924.41 mi (7,925.08 km) |
| Tigard to Ilfracombe | 4,827.02 mi (7,768.34 km) |
| Tigard to Ilkeston | 4,811.43 mi (7,743.24 km) |
| Tigard to Ilkley | 4,747.34 mi (7,640.11 km) |
| Tigard to Immingham | 4,805.71 mi (7,734.04 km) |
| Tigard to Ince-in-Makerfield | 4,746.98 mi (7,639.53 km) |
| Tigard to Inverness | 4,501.55 mi (7,244.54 km) |
| Tigard to Inverurie | 4,557.79 mi (7,335.05 km) |
| Tigard to Ipswich | 4,925.44 mi (7,926.73 km) |
| Tigard to Irlam | 4,756.71 mi (7,655.19 km) |
| Tigard to Irthlingborough | 4,864.46 mi (7,828.60 km) |
| Tigard to Irvine | 4,584.68 mi (7,378.34 km) |
| Tigard to Islington | 4,920.10 mi (7,918.13 km) |
