Complex sentence: Adel Road runs north along the eastern shore of Crump and Hart lakes in the Warner Valley while Twentymile Road runs south from Adel to northern California just east of that state's border with Nevada.
Split into simpler sentences: Adel Road runs north from Adel along the eastern shore of Crump and Hart lakes in the Warner Valley. From that same intersection, Twentymile Road runs south to northern California just east of that state's border with Nevada.