The Wallride is both a trick and an obstacle. The wallride as an obstacle is an extremely steep bank or vertical wall. In skate parks, you will often find a small bank or something which makes conquering the Wallride easier.
Best practice trick:
The term Wallride actually refers to the trick itself. Riding a skateboard on a wall. From a very steep bank to the wall of a house – you can wallride anything vertical. A good trick to start with is the BS Wallride. Learn how to do the trick in this video: