[brianlcox]

Hi Nick,

Thanks for the reply. I agree that holding kettlebells are probably the way to go once the backpack gets too heavy. I will get a 12kg and a 16kg from my brother-in-law to try out.

My thought is that I might not really need to go heavier though. I’m already at 55-60% of body weight, which seems to be around the point where adding more strength stops helping improve running as much.  Maybe I should just move to 2x per week hill sprints now.

I also do speed work (such as 16x 200m or 8x 400m) onceper week to help with running economy.

Best,

Brian