| Potomac to Tacoma (Washington) | 2,317.27 mi (3,729.29 km) |
| Potomac to Tahlequah (Oklahoma) | 996.80 mi (1,604.19 km) |
| Potomac to Takoma Park (Maryland) | 10.53 mi (16.95 km) |
| Potomac to Talladega (Alabama) | 627.96 mi (1,010.60 km) |
| Potomac to Tallahassee (Florida) | 713.83 mi (1,148.79 km) |
| Potomac to Tallmadge (Ohio) | 266.02 mi (428.12 km) |
| Potomac to Tamalpais-Homestead Valley (California) | 2,429.19 mi (3,909.40 km) |
| Potomac to Tamarac (Florida) | 902.55 mi (1,452.52 km) |
| Potomac to Tamiami (Florida) | 934.81 mi (1,504.43 km) |
| Potomac to Tampa (Florida) | 818.86 mi (1,317.82 km) |
| Potomac to Tanaina (Alaska) | 3,329.86 mi (5,358.89 km) |
| Potomac to Tanque Verde (Arizona) | 1,928.85 mi (3,104.18 km) |
| Potomac to Tarboro (North Carolina) | 215.76 mi (347.23 km) |
| Potomac to Tarpon Springs (Florida) | 815.79 mi (1,312.88 km) |
| Potomac to Tarrytown (New York) | 225.91 mi (363.57 km) |
