The Gwili River is a river located in Wales, flowing through the picturesque Carmarthenshire region. It is approximately 20 miles long and is a tributary of the Towy River. The river is known for its scenic beauty, with lush greenery and diverse wildlife along its banks. The Gwili River is popular for various recreational activities, including fishing and walking. The Gwili Railway, a heritage railway, runs alongside part of the river, offering visitors a chance to enjoy the landscape while experiencing a piece of Victorian history. The area attracts nature enthusiasts and tourists alike.