臺東市
From Hualien City to Taitung City in Taitung County, the highway is known as Huadong Highway (花東公路). The route serves as the primary north–south highway for the Huatung Valley townships. The highway connects the townships of Ji'an, Shoufeng, Fenglin, Guangfu, Ruisui, Yuli, and Fuli in Hualien County, as well as Chishang, Guanshan, Luye, Yanping, and Beinan, before reaching Taitung City.