Boumalne Dadès is most easily reached by grand taxi from Tinghir (about 40 km east, under an hour) or from Ouarzazate (about 115 km west, roughly 90 minutes). Grand taxis on both routes run throughout the day and leave when full.
Buses serving the Ouarzazate–Tinghir route also stop in Boumalne; CTM and several private operators run daily services. If coming from Marrakech, change at Ouarzazate.