| Potomac to Trim | 3,358.46 mi (5,404.92 km) |
| Potomac to Tuam | 3,276.31 mi (5,272.71 km) |
| Potomac to Tullamore | 3,334.31 mi (5,366.05 km) |
| Potomac to Waterford | 3,365.09 mi (5,415.58 km) |
| Potomac to Wexford | 3,391.39 mi (5,457.91 km) |
| Potomac to Wicklow | 3,398.07 mi (5,468.66 km) |
| Potomac to Abano Terme | 4,336.82 mi (6,979.44 km) |
| Potomac to Abbiategrasso | 4,212.78 mi (6,779.82 km) |
| Potomac to Acate | 4,756.82 mi (7,655.36 km) |
| Potomac to Acerra | 4,604.00 mi (7,409.42 km) |
| Potomac to Aci Castello | 4,766.64 mi (7,671.17 km) |
| Potomac to Aci Catena | 4,764.37 mi (7,667.51 km) |
| Potomac to Aci Sant'Antonio | 4,763.61 mi (7,666.29 km) |
| Potomac to Acireale | 4,765.25 mi (7,668.92 km) |
| Potomac to Acquaviva delle Fonti | 4,714.81 mi (7,587.76 km) |
