Complex sentence: Pennsylvania Route 309 is a major highway which runs for 134 miles (216 km) through Pennsylvania, in the United States that connects Philadelphia and its northern suburbs to Allentown, Hazleton, and Wilkes-Barre.
Split into simpler sentences: Pennsylvania Route 309 is a major highway which runs for 134 miles (216 km) through Pennsylvania in the United States. It connects Philadelphia and its northern suburbs to Allentown, Hazleton, and Wilkes-Barre.