Check the live webcams before trekking out; a fog-filled summit ruins the day. Grab the combo pass for the Vitznau cogwheel train and the Rigi Kaltbad mineral baths—the soak makes the steep ticket price feel justifiable. Sit on the right side of the carriage for optimal Lake Lucerne shots during the climb. Budget at least five hours for the full loop. If the clouds look heavy, pivot to a different plan immediately.
