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?

Context articles: Slatington, Pennsylvania
Lehigh Valley International Airport
Lehigh County, Pennsylvania
Pennsylvania Route 145
Lehigh and Northampton Transportation Authority
Lehigh Gap
Pennsylvania Route 987
Lehigh Valley Conference
Bethlehem, Pennsylvania
Lehigh Valley

Slatington is a borough in Lehigh County, Pennsylvania.
 It is located 20 miles north of Bethlehem, in the Lehigh Valley region of the state.
 It is 62 miles south of Scranton, and 70 miles north of Philadelphia.
Lehigh Valley International Airport (IATA: ABE, ICAO: KABE, FAA LID: ABE) (formerly Allentown–Bethlehem–Easton International Airport) is a public airport in Hanover Township, Lehigh County, Pennsylvania.
 Parts of it are in Catasauqua and Allen Township, Northampton County, Pennsylvania.
 It is 3 miles (5 km) northeast of Allentown, in the Lehigh Valley region of Pennsylvania, the third most-populous metropolitan region in the state (after Philadelphia and Pittsburgh).
Lehigh County is a county located in the Lehigh Valley region of the U.S. state of Pennsylvania.
 As of the 2010 census, the population was 349,497.
 Its county seat is Allentown, the state's third largest city behind Philadelphia and Pittsburgh.
 The county, which was first settled around 1730, was formed in 1812 with the division of Northampton County into two counties.
 It is named after the Lehigh River, whose name is derived from the Delaware Indian term Lechauweki or Lechauwekink, meaning "where there are forks".
Pennsylvania Route 145 (PA 145) is a 20.89 mi long north–south state highway in the Lehigh Valley area of eastern Pennsylvania.
 It connects Interstate 78 (I-78) and PA 309 in Lanark, Lehigh County to PA 248 in Weiders Crossing, Northampton County.
 PA 145 is the main north-south arterial into Allentown, the third-largest city in the state.
 The route enters the city on South 4th Street and follows multiple streets to downtown, where it follows the one-way pair of 6th Street northbound and 7th Street southbound.
 North of Allentown in Whitehall Township, a seven-mile (11.2 km) portion of PA 145 is known as MacArthur Road, named in honor of General Douglas MacArthur.
 MacArthur Road is a divided highway; between U.S. Route 22 (US 22) and Eberhart Road, it is six lanes wide with a Jersey barrier and jughandles while the remainder of the road a four-lane divided highway.
 MacArthur Road is the location of the main commercial center of the Lehigh Valley.
 North of Eagle Point, PA 145 becomes a two-lane undivided road that parallels the Lehigh River, crossing the river into Northampton County at Treichlers.
 The route continues along the east bank of the river and passes through Walnutport before reaching its northern terminus.
 PA 145 is dedicated as the Battle of the Bulge Veterans Memorial Highway in honor of the veterans who fought in the Battle of the Bulge.
The Lehigh and Northampton Transportation Authority (LANTA; stylized as 'LANta'), is a transit agency that provides public, fixed-route bus service throughout Lehigh County and Northampton County, in Pennsylvania, United States.
 The primary area that LANTA serves is the Lehigh Valley region of Pennsylvania, serving the cities of Allentown, Bethlehem, and Easton.
The Lehigh Gap, is a water gap located in the townships of Lehigh, Washington, Lower Towamensing and East Penn in the Lehigh Valley that was formed by the Lehigh River where it cuts through the Blue Mountain in the state of Pennsylvania in the United States.
 The gap allows easy travel between Carbon County to the north and Lehigh and Northampton counties to the south of the mountain.
 One of the more distinctive features of the gap is Devil's Pulpit, a rock formation that reminds hikers of a pulpit.
 Lehigh Gap is also the name of a village also known as Weider's Crossing and located at the south end of the gap in Lehigh and Northampton Counties.
Pennsylvania Route 987 (PA 987) is a state highway in the U.S. state of Pennsylvania, running 10.3 mi from U.S. Route 22 (US 22) near the Lehigh Valley International Airport north of Allentown north to PA 946 in Klecknersville.
 The route begins at a cloverleaf interchange with the US 22 freeway north of Allentown in Lehigh County and heads to the east of the airport as a four-lane divided highway called Airport Road as it crosses into Northampton County.
 PA 987 narrows to a two-lane undivided road and continues north, becoming concurrent with PA 329 as it heads into Bath.
 Here, PA 329 ends and PA 987 briefly runs concurrent with PA 248 before leaving the borough.
 PA 987 continues northwest and serves Chapman before ending at PA 946.
 PA 987 was first designated in the 1930s between US 22 (Union Boulevard) in Allentown and PA 946 in Klecknersville.
 After US 22 was relocated to its present freeway alignment in 1955, the southern terminus of PA 987 was cut back to its interchange with US 22, which used to carry Interstate 78 (I-78) as well.
 In the early 2000s, PA 987 was widened into a divided highway and shifted to a new alignment near the Lehigh Valley International Airport.
The Lehigh Valley Interscholastic Athletic Conference (known informally as the Lehigh Valley Conference, or LVC) was an athletic conference consisting of 12 of the larger high schools from Lehigh and Northampton counties in the Lehigh Valley region of Pennsylvania, in the United States.
 It was part of District XI of the Pennsylvania Interscholastic Athletic Association (PIAA).
Bethlehem is a city in Lehigh and Northampton counties in the Lehigh Valley region of the eastern portion of the U.S. state of Pennsylvania.
 As of the 2010 census, the city had a total population of 74,982, making it the seventh largest city in Pennsylvania, after Philadelphia, Pittsburgh, Allentown, Erie, Reading, and Scranton.
 Of this, 55,639 were in Northampton County, and 19,343 were in Lehigh County.
The Lehigh Valley ( ), known officially by the United States Census Bureau and the United States Office of Management and Budget as the Allentown–Bethlehem–Easton, PA–NJ Metropolitan Statistical Area and referred to colloquially as The Valley, is a metropolitan region officially consisting of Carbon, Lehigh and Northampton counties in eastern Pennsylvania and Warren county on the western edge of New Jersey, in the Eastern United States.
 The Lehigh Valley's largest city, with a population of 119,104, is Allentown.