| Seia to Ifield | 821.89 mi (1,322.70 km) |
| Seia to Ilford | 854.27 mi (1,374.81 km) |
| Seia to Ilfracombe | 764.70 mi (1,230.67 km) |
| Seia to Ilkeston | 917.56 mi (1,476.66 km) |
| Seia to Ilkley | 972.15 mi (1,564.53 km) |
| Seia to Immingham | 975.97 mi (1,570.67 km) |
| Seia to Ince-in-Makerfield | 937.15 mi (1,508.20 km) |
| Seia to Inverness | 1,188.57 mi (1,912.82 km) |
| Seia to Inverurie | 1,188.75 mi (1,913.12 km) |
| Seia to Ipswich | 907.13 mi (1,459.88 km) |
| Seia to Irlam | 933.00 mi (1,501.53 km) |
| Seia to Irthlingborough | 888.03 mi (1,429.15 km) |
| Seia to Irvine | 1,059.19 mi (1,704.60 km) |
| Seia to Islington | 849.58 mi (1,367.27 km) |
| Seia to Iver | 840.13 mi (1,352.06 km) |
