River Fillan is a river located in the central part of Scotland. It flows through the picturesque landscape of the Scottish Highlands, eventually joining the River Dochart. The river is known for its scenic beauty and is a popular spot for fishing and outdoor activities. The River Fillan is approximately 10 miles long and is characterized by its clear waters and surrounding greenery. It is part of the Loch Lomond and The Trossachs National Park, which attracts many visitors each year. The river's tranquil environment makes it an ideal location for nature enthusiasts and those seeking relaxation.