I don’t often post on the forum, but after reading what you are going through strikes a chord. I too had difficulty regaining fitness after surgery over 18 months ago, after much frustration over the last year I realised I was never going to be at my previous level ever and have now accepted to enjoy the ride whatever the speed and of late just started to improve a little. Three months ago I decided to retire (62 today) and after reading yours and others posts, set my self a goal to train (Todmorden / Hebden Bridge areas) and do the South Lakes 100, the one I assume you refer to in May, I just want to complete it and enjoy the days and I hope you will be able to do so also, just be realistic, we will never be racing snakes again.