I see a lot of threads where people say, "The ride had X feet of climbing." How is that measured? Is it a)simply the difference between the altitude from the departure point to the destination, b) the height of the highest point during the trip, or c) the sum of every climb during the trip? For example, let's say I rode a loop, which had a 200' hill, a 500' hill, and a 1000' hill. By using a)I wouldn't have had any net climbing(because I returned to the same point), by using b) I would have climbed 1000'(the highest hill), and by using c) I would have climbed 1700'(the sum of the three). Which is the right way to measure climbing?