I am plaining for my biggest ride to be at the end of summer. It will be three days in a row, looks like it will be about 100, 90, and 60 miles, or any other combination that adds up to the total, just thought I would want a short day by the end. Would it be in my best interest to to back-to-back long rides on weekends to get ready for this? and how long would I want to go in training?