Barregarrow is excellent. You can watch at the top where you can almost touch the riders and then walk down through the field to the bend at the bottom (wear decent walking shoes).Park in the road on the inside of the track and you can 'escape' down the back roads during 'roads closed' up to the mountain or back to the Grandstand via the road under the track at Quarter Bridge. Buy yourself an OS map number 95 which shows all the small roads and don't forget at some places you'll be 'trapped' until roads open which, if there are postponements could be most of the day. Don't forget a radio for the commentary if you are away from loudspeakers (Medium Wave 1368)