After a huge amount of debating and agonising, I have come to the conclusion that no running rucksack will be large enough to fit in all the kit on the mandatory Spine kit list. Try as I might, no amount of squeezing and squashing would allow a decent sleeping bag into my prized MDS running pack, let alone leave any room for other gear. So, it's back to a bigger rucksack - the comfiest I could find within my budget. I felt less like a runner, more like a cadet training for the DofE. Ah well.
