| Potomac to Surbo | 4,789.93 mi (7,708.64 km) |
| Potomac to Susegana | 4,339.78 mi (6,984.21 km) |
| Potomac to Suzzara | 4,304.74 mi (6,927.81 km) |
| Potomac to Taggia | 4,216.27 mi (6,785.43 km) |
| Potomac to Taglio | 4,366.56 mi (7,027.30 km) |
| Potomac to Taormina | 4,761.64 mi (7,663.12 km) |
| Potomac to Taranto | 4,748.37 mi (7,641.76 km) |
| Potomac to Tarcento | 4,367.81 mi (7,029.31 km) |
| Potomac to Tarquinia | 4,442.12 mi (7,148.90 km) |
| Potomac to Taurianova | 4,775.53 mi (7,685.48 km) |
| Potomac to Taurisano | 4,808.90 mi (7,739.18 km) |
| Potomac to Tavagnacco | 4,370.65 mi (7,033.88 km) |
| Potomac to Taviano | 4,803.96 mi (7,731.23 km) |
| Potomac to Teano | 4,579.75 mi (7,370.40 km) |
| Potomac to Tempio Pausania | 4,370.18 mi (7,033.13 km) |
