Lake Dillon is a man-made reservoir. It is huge. There is a paved bike (recreation) path which goes around much of the lake (start in Frisco or Dillon) and offers spectacular views of the surrounding mountains. In the summer and fall, you should take the water taxi which runs between the marinas in Frisco and Dillon.
If you own or manage Dillon Reservoir, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.