Agility help!!!

Hey, i got members but i don’t know where are the lv 20 “medium agility” courses and it doesnt say on any runescape help site? can somone help me?

there is no “medium lvl courses” there is just medium lvl obsticles. hope that clears things up

its for the agilty arena in brimhaven…there are three differant ranks of obstacles, basic medium and hard.
U can now do 2 3rds of the challenges in the arena