| Harrow to Trezzo sull'Adda | 610.33 mi (982.23 km) |
| Harrow to Tricase | 1,202.61 mi (1,935.42 km) |
| Harrow to Trieste | 762.13 mi (1,226.53 km) |
| Harrow to Triggiano | 1,093.43 mi (1,759.71 km) |
| Harrow to Trinitapoli | 1,050.37 mi (1,690.41 km) |
| Harrow to Trissino | 676.54 mi (1,088.79 km) |
| Harrow to Triuggio | 598.99 mi (963.98 km) |
| Harrow to Trofarello | 587.47 mi (945.43 km) |
| Harrow to Troina | 1,198.54 mi (1,928.86 km) |
| Harrow to Turin | 580.47 mi (934.18 km) |
| Harrow to Udine | 724.16 mi (1,165.42 km) |
| Harrow to Ugento | 1,195.57 mi (1,924.08 km) |
| Harrow to Umbertide | 821.64 mi (1,322.31 km) |
| Harrow to Urbino | 810.22 mi (1,303.93 km) |
| Harrow to Urgnano | 616.80 mi (992.64 km) |
