Loch Lomond. My first true love! If you don’t know, Loch Lomond & Trossachs is a national park in Scotland. However, this post will focus on only one aspect of the park – the water itself, Loch Lomond. Since I was young, we’ve always visited the shores of Loch Lomond for summer day trips and winter road trips. It’s not particularly a secret, but I wanted to make it as simple as possible for you to plan your trip, too. Loch Lomond is a fresh water loch and is the greatest inland stretch of water in Britain based on its surface area. Below I’ve split the Loch into East and West to make your trip as straightforward as possible.