It's just under 2 miles from the grandstand to Hillberry, walkable I'd say although I've never actually walked it! Stand behind the low wall and you'll be within 2 feet of them as they tip in to the corner. You can see them approach down from Brandish. If you choose a spot a little further 'around' the corner you won't be as close but will see them exit Hillberry and head off towards Cronk-ny-Mona.