| Sun Prairie to Ickenham | 3,933.88 mi (6,330.96 km) |
| Sun Prairie to Ifield | 3,957.81 mi (6,369.48 km) |
| Sun Prairie to Ilford | 3,953.83 mi (6,363.07 km) |
| Sun Prairie to Ilfracombe | 3,806.43 mi (6,125.86 km) |
| Sun Prairie to Ilkeston | 3,854.85 mi (6,203.78 km) |
| Sun Prairie to Ilkley | 3,805.46 mi (6,124.29 km) |
| Sun Prairie to Immingham | 3,873.39 mi (6,233.61 km) |
| Sun Prairie to Ince-in-Makerfield | 3,789.37 mi (6,098.39 km) |
| Sun Prairie to Inverness | 3,615.72 mi (5,818.93 km) |
| Sun Prairie to Inverurie | 3,684.02 mi (5,928.85 km) |
| Sun Prairie to Ipswich | 3,976.03 mi (6,398.80 km) |
| Sun Prairie to Irlam | 3,798.84 mi (6,113.64 km) |
| Sun Prairie to Irthlingborough | 3,901.83 mi (6,279.40 km) |
| Sun Prairie to Irvine | 3,652.54 mi (5,878.20 km) |
| Sun Prairie to Islington | 3,947.26 mi (6,352.51 km) |
