A normal height rail that is around 8-9 meters long. It has a slight curve downhill. The landing and take-off are made of brickyard blocks - so at least for the take-off, you'll need to bring a wooden plate. This rail is more than worth that trouble.
In Hellerup. If you can find the "Is bar" along "strandvejen" in Hellerup (there is almost an about 50+ meter long line to the icecream store) then go down the road right across it. Go down there for about 20 meters and turn left. Now you can't miss it.