| Penafiel to Ifield | 785.62 mi (1,264.33 km) |
| Penafiel to Ilford | 817.73 mi (1,316.00 km) |
| Penafiel to Ilfracombe | 718.88 mi (1,156.92 km) |
| Penafiel to Ilkeston | 875.60 mi (1,409.15 km) |
| Penafiel to Ilkley | 928.05 mi (1,493.55 km) |
| Penafiel to Immingham | 935.17 mi (1,505.01 km) |
| Penafiel to Ince-in-Makerfield | 892.05 mi (1,435.61 km) |
| Penafiel to Inverness | 1,138.52 mi (1,832.27 km) |
| Penafiel to Inverurie | 1,141.04 mi (1,836.33 km) |
| Penafiel to Ipswich | 871.81 mi (1,403.05 km) |
| Penafiel to Irlam | 888.33 mi (1,429.63 km) |
| Penafiel to Irthlingborough | 848.50 mi (1,365.53 km) |
| Penafiel to Irvine | 1,009.33 mi (1,624.36 km) |
| Penafiel to Islington | 812.65 mi (1,307.83 km) |
| Penafiel to Iver | 802.32 mi (1,291.22 km) |
