The Plenty Highway is a 498 kilometre outback mostly unsealed road in the Northern Territory between the Stuart Highway and north-western Queensland.The road begins at a turnoff from the Stuart Highway 68 kilometres north of Alice Springs, and finishes at Tobermorey Homestead on the Northern Territory/Queensland border. It then continues for another 249 km to Boulia Queensland, as the Donohue Highway.The first 100 kilometres from the Stuart Highway to Ongeva Creek is sealed.