Loch Affric is a freshwater loch within Glen Affric, in the Highland council area of Scotland. It lies about 25 miles southwest of Beauly. The loch sits in a national nature reserve known for being home to a number of rare species and the loch itself is popular for trout fishing. An annual duathlon is held on the banks of the loch in May and the loch has been widely us…Loch Affric is a freshwater loch within Glen Affric, in the Highland council area of Scotland. It lies about 25 miles southwest of Beauly. The loch sits in a national nature reserve known for being home to a number of rare species and the loch itself is popular for trout fishing. An annual duathlon is held on the banks of the loch in May and the loch has been widely used as the backdrop in films.