| Potomac to Totana | 3,972.65 mi (6,393.36 km) |
| Potomac to Trujillo | 3,708.95 mi (5,968.98 km) |
| Potomac to Tudela | 3,839.85 mi (6,179.64 km) |
| Potomac to Tudela de Duero | 3,712.95 mi (5,975.41 km) |
| Potomac to Tuineje | 3,633.16 mi (5,847.01 km) |
| Potomac to Ubeda | 3,873.83 mi (6,234.33 km) |
| Potomac to Ubrique | 3,811.32 mi (6,133.73 km) |
| Potomac to Umbrete | 3,756.08 mi (6,044.83 km) |
| Potomac to Utebo | 3,878.56 mi (6,241.93 km) |
| Potomac to Utiel | 3,931.81 mi (6,327.64 km) |
| Potomac to Utrera | 3,780.55 mi (6,084.21 km) |
| Potomac to Valdemorillo | 3,767.41 mi (6,063.06 km) |
| Potomac to Valdemoro | 3,795.08 mi (6,107.59 km) |
| Potomac to Valdepenas | 3,849.84 mi (6,195.72 km) |
| Potomac to Valencia | 3,974.52 mi (6,396.37 km) |
