Brandy, That is a LOT of climbing! Wow. I have a question. How do you figure the Grade of a hill if you have the elevation and the mileage? I know there must be some equation. I'm not understanding. There is this huge hill I see ppl training on that is right down the road from me and it is 717ft of elev. gain in .86 miles The one I finally did last year that I was so proud of was 306 ft in 1.06 miles. So how do I know the grade?