Know Before You Go
By car or bike from the Lyness ferry about 25km in total. 20km on a single track road and the last 4.5 or so on trail. There may also be tour services.
Park by the Rackwick bay in the free and open lot, or attempt to park up the road by the hostel if you can find the driveway. The site is not well signed from the roads. Once you are at the bay, just head to the right and up and towards the few bothys on the hillside on any trail you see. They will line up with the trail to the Old Man. Winds can be strong, bring layers and water... and of course a camera!