| Potomac to Todi | 4,452.43 mi (7,165.49 km) |
| Potomac to Tolentino | 4,475.10 mi (7,201.97 km) |
| Potomac to Tolmezzo | 4,353.27 mi (7,005.92 km) |
| Potomac to Torre Annunziata | 4,614.55 mi (7,426.40 km) |
| Potomac to Torre Boldone | 4,236.17 mi (6,817.46 km) |
| Potomac to Torre del Greco | 4,611.33 mi (7,421.22 km) |
| Potomac to Torre Maggiore | 4,617.13 mi (7,430.55 km) |
| Potomac to Torre Santa Susanna | 4,769.93 mi (7,676.45 km) |
| Potomac to Torri di Quartesolo | 4,324.23 mi (6,959.18 km) |
| Potomac to Tortoli | 4,428.54 mi (7,127.05 km) |
| Potomac to Tortona | 4,226.80 mi (6,802.38 km) |
| Potomac to Tortoreto | 4,517.04 mi (7,269.47 km) |
| Potomac to Tradate | 4,203.22 mi (6,764.43 km) |
| Potomac to Trani | 4,682.05 mi (7,535.02 km) |
| Potomac to Trapani | 4,628.85 mi (7,449.42 km) |
