Loaded up my backpack today with the kit I'll be using to recce the TMB in July. I have thought really hard about weight and how I can keep it to an absolute minimum. My fully loaded pack was 3.8kg today. Think I may have another 4-500g on top of that.
I thought it would feel heavy and uncomfortable, but although definitely not ideal, I managed a good long hilly trail run of 20m without any problems. Used my trail poles on the uphills and on the technical downhills today too and I have to say that I love them. They make such a difference (despite the odd looks!)
Mr pack race weight for August will hopefully be much nearer the minimum allowable pack weight of 2kg, but I'm going to train with the heavier bag for my long runs.