| Zagarolo to Ifield | 890.21 mi (1,432.65 km) |
| Zagarolo to Ilford | 900.95 mi (1,449.94 km) |
| Zagarolo to Ilfracombe | 1,029.76 mi (1,657.24 km) |
| Zagarolo to Ilkeston | 1,011.00 mi (1,627.05 km) |
| Zagarolo to Ilkley | 1,072.29 mi (1,725.69 km) |
| Zagarolo to Immingham | 1,011.76 mi (1,628.26 km) |
| Zagarolo to Ince-in-Makerfield | 1,076.80 mi (1,732.94 km) |
| Zagarolo to Inverness | 1,315.05 mi (2,116.37 km) |
| Zagarolo to Inverurie | 1,260.12 mi (2,027.97 km) |
| Zagarolo to Ipswich | 893.58 mi (1,438.08 km) |
| Zagarolo to Irlam | 1,066.99 mi (1,717.15 km) |
| Zagarolo to Irthlingborough | 959.03 mi (1,543.41 km) |
| Zagarolo to Irvine | 1,235.05 mi (1,987.62 km) |
| Zagarolo to Islington | 906.24 mi (1,458.46 km) |
| Zagarolo to Iver | 918.06 mi (1,477.48 km) |
