Option 1 Take the A82 along Loch Lomond to Tarbet, then the A83 towards Inveraray and Campbeltown. At Cairndow, turn left on to the A815, then at Strachur turn right on to the A886, signposted Glendaruel and Colintraive.

Option 2 Take the A8 to Gourock, then Western Ferries from McInroy’s Point to Hunter’s Quay near Dunoon. Turn right on to A815, then shortly after leaving the 40mph area, turn left on B836, a single track road with passing places. After about 17 miles, turn right on A886, then left on A8003 towards Tighnabruaich.