Swimming has been permitted in this fantastic, beautiful, fresh water Loch since 2007.
It is the main reservoir for the supply of fresh water to Glasgow and as such, offers fabulous, clear water which is a pleasure to swim in. There is no fishing permitted either from boats or the shore, so there is no risk of angler's lines (or their tongues!).
Park at the main Loch Katrine car park off the A821 (a pay-and-display car park so remember some change). Walk or cycle along the access road on the North shore of the Loch. After about a mile, there are many good access points to the water for swimming from all the small pebble beaches.
This is a crowd-sourced map. Abilities vary, and conditions change. Always assess risks for yourself before getting in.
Two cruise boats provide tours up the and down the Loch, mainly staying to the centre of the Loch and South shoreline.