Question: What is a borough in Lehigh County, Pennsylvania  located 20 miles north of a city in Lehigh and Northampton counties in the Lehigh Valley region of the eastern portion of the U.S. state of Pennsylvania?
Sentence (from "Pennsylvania Route 145"): Pennsylvania Route 145 (PA 145) is a 20.89 mi long north–south state highway in the Lehigh Valley area of eastern Pennsylvania.
Relevant evidence: No