We had 20+ sustained on monday... I used it as a good "weight training" for my legs... I would hop out of the saddle and go all out for 2 blocks, then rest 1 block...go 3 blocks, then rest 2 blocks...next set I would go 4 blocks, then rest 2, building up to six blocks with a max rest of 3 blocks...by that time I was out of the head wind and it was blowing off my left rear and I had a break to carry me home.