| Portlethen to Ickenham | 386.18 mi (621.50 km) |
| Portlethen to Ifield | 417.54 mi (671.96 km) |
| Portlethen to Ilford | 390.55 mi (628.53 km) |
| Portlethen to Ilfracombe | 412.30 mi (663.54 km) |
| Portlethen to Ilkeston | 284.45 mi (457.78 km) |
| Portlethen to Ilkley | 217.01 mi (349.25 km) |
| Portlethen to Immingham | 249.71 mi (401.87 km) |
| Portlethen to Ince-in-Makerfield | 243.96 mi (392.62 km) |
| Portlethen to Inverness | 83.38 mi (134.19 km) |
| Portlethen to Inverurie | 17.79 mi (28.64 km) |
| Portlethen to Ipswich | 369.69 mi (594.96 km) |
| Portlethen to Irlam | 250.11 mi (402.51 km) |
| Portlethen to Irthlingborough | 332.82 mi (535.63 km) |
| Portlethen to Irvine | 138.94 mi (223.60 km) |
| Portlethen to Islington | 389.81 mi (627.33 km) |
