Definitely best ridden on a gravel bike (or mtb if you want to take full advantage of the downhills). Be warned, in the summer, be prepared with a strong insect repellant ... this really is cleg country. In case you are not sure what clegs are, they are a type of horsefly, horsefly bites are not nice! Despite that, this is a brilliant track to ride and is part of the northern loop of the Highland 550 race.