| Gaithersburg to Trezzo sull'Adda | 4,227.73 mi (6,803.87 km) |
| Gaithersburg to Tricase | 4,814.28 mi (7,747.83 km) |
| Gaithersburg to Trieste | 4,405.90 mi (7,090.61 km) |
| Gaithersburg to Triggiano | 4,707.31 mi (7,575.68 km) |
| Gaithersburg to Trinitapoli | 4,661.08 mi (7,501.28 km) |
| Gaithersburg to Trissino | 4,307.66 mi (6,932.51 km) |
| Gaithersburg to Triuggio | 4,215.04 mi (6,783.46 km) |
| Gaithersburg to Trofarello | 4,170.76 mi (6,712.20 km) |
| Gaithersburg to Troina | 4,729.53 mi (7,611.44 km) |
| Gaithersburg to Turin | 4,165.25 mi (6,703.32 km) |
| Gaithersburg to Udine | 4,369.15 mi (7,031.47 km) |
| Gaithersburg to Ugento | 4,805.55 mi (7,733.78 km) |
| Gaithersburg to Umbertide | 4,426.60 mi (7,123.93 km) |
| Gaithersburg to Urbino | 4,424.88 mi (7,121.15 km) |
| Gaithersburg to Urgnano | 4,235.58 mi (6,816.51 km) |
