eippo1, I agree with what the others are trying to tell you. You are focusing on high effort, short duration work, which is your strength right now. The problem is that you don't have the base to recover from those efforts. Believe me, the M35+ will eat you alive if you don't spend some time working on base, tempo, and FTP, in that order of importance. Really fit Cat4 Masters get blown off the back in every Masters race I do. Racing into shape works for sharpening the knife and peaking after a good long period of the kind of training we are suggesting. You'd have to be an exceptional athlete to race yourself into shape from literally nothing these days.