Long Lake   Be the first to submit input for Long Lake. If you have info on Long Lake, Sheridan County, Montana please submit it here to improve this web site.          These outdoors activities are available near Long Lake.   Hotels Near Long Lake: Lone Tree Inn, Sidney, 39 miles away Richland Motor Inn, Sidney, 39 miles away Candlewood Suites WILLISTON, Williston, 40 miles away Marquis Plaza And Suites, Williston, 40 miles away Missouri Flats Inn, Williston, 40 miles away