| Seclin to Ifield | 146.70 mi (236.10 km) |
| Seclin to Ilford | 145.61 mi (234.34 km) |
| Seclin to Ilfracombe | 314.87 mi (506.73 km) |
| Seclin to Ilkeston | 249.81 mi (402.03 km) |
| Seclin to Ilkley | 310.62 mi (499.89 km) |
| Seclin to Immingham | 252.69 mi (406.66 km) |
| Seclin to Ince-in-Makerfield | 315.97 mi (508.50 km) |
| Seclin to Inverness | 561.41 mi (903.51 km) |
| Seclin to Inverurie | 514.20 mi (827.52 km) |
| Seclin to Ipswich | 132.10 mi (212.59 km) |
| Seclin to Irlam | 306.18 mi (492.75 km) |
| Seclin to Irthlingborough | 199.15 mi (320.51 km) |
| Seclin to Irvine | 473.45 mi (761.94 km) |
| Seclin to Islington | 152.44 mi (245.33 km) |
| Seclin to Iver | 167.69 mi (269.87 km) |
