Good job on dropping 15 of the 20. I picked up 20 this past year too and have not lost any of it. Hills are a lot harder and slower. I don't anticipate with my current demands and lack of motivation I will be able to drop more than about 5 of it this year. Although cycling is still a big part of my life it is not the center, am now doing more hiking and backpacking with my daughter. I need to do this before she gets into those tough teenage years.