| Herndon to Trezzo sull'Adda | 4,242.03 mi (6,826.89 km) |
| Herndon to Tricase | 4,828.47 mi (7,770.68 km) |
| Herndon to Trieste | 4,420.29 mi (7,113.77 km) |
| Herndon to Triggiano | 4,721.53 mi (7,598.57 km) |
| Herndon to Trinitapoli | 4,675.29 mi (7,524.15 km) |
| Herndon to Trissino | 4,322.00 mi (6,955.59 km) |
| Herndon to Triuggio | 4,229.34 mi (6,806.47 km) |
| Herndon to Trofarello | 4,184.98 mi (6,735.08 km) |
| Herndon to Troina | 4,743.45 mi (7,633.85 km) |
| Herndon to Turin | 4,179.47 mi (6,726.21 km) |
| Herndon to Udine | 4,383.55 mi (7,054.65 km) |
| Herndon to Ugento | 4,819.74 mi (7,756.62 km) |
| Herndon to Umbertide | 4,440.83 mi (7,146.83 km) |
| Herndon to Urbino | 4,439.14 mi (7,144.10 km) |
| Herndon to Urgnano | 4,249.89 mi (6,839.53 km) |
