I have read the thread actually, I just find it hard to believe anyone would willingly pack 50kg into a pack and try to hump it any distance. In an emergency situation such as your's then yes it is possible, but not through choice. I have spent time in the arctic circle in both Alaska and Finland, and also hiked across the Carpathians in Romania. I have NEVER put that much weight on my back and never intend to. A 30kg pack is more than ample for 99% of situations, if you're finding yourself carrying more than that then you're IMHO doing something wrong. 50kg is nearly 8 stone, thats like carrying another small guy on you're back. Its a ludicrous weight to be carrying in the UK where re-supplying is generally pretty easy. The training program the OP is trying to follow is far too harsh both on the body and mind, and many members have tried to offer advice concerning this (including several ex-servicemen, one being an ex-Royal Marine Commando-well renowned for their ability to 'hump'). I respect anyone for setting themselves a challenge or a target, but this really isn't the way to go about it. To the OP-do yourself a favour, cut down the kit or get lighter gear, ditch the food and plan in re-supplys, ditch the water and get a decent purification set up. Pack all the kit into a bag and head out for the weekend-see how it feels. Slow down a bit and get comfortable with the kit you're going to take-see what you need and what you don't need...if it still weighs more than 30kgs have another think about what you can do without. An ex-services friend of mine said ''you can either go walking-or go camping...'' its two different sets of kit. I thought that was excellent advice. Good luck-peace out 
