I am training for a marathon and also a long trail run and feel that I need to start incorporating hydration in my long runs (>10 miles), especially as since I now live at altitude and it is very dry out here. I have a Nathan hand bottle that I used to use on hot/humid runs in PA but typically no longer than 5-6 miles because after a while it gets annoying. My runs around here could be configured so I can stash a bottle but I'd rather have it with me if possible in case I get dry all of a sudden.

I bought an Amphipod configurable belt and used it on my last 10 mile run, but found that I couldn't get it to stay on my hips. I am very petite, short-waisted and a bit curvy. If I pushed it down really far onto my butt it would stay put for a mile or so but eventually it would creep up to my waist (narrower) and bounce and shift around. Generally it was a pain and I ended up stashing it by the side of the road after four miles, and picked it up on the way back.

Are there any brands of hydration belts that work better for women similar in proportion/shape to me? Is there a trick any of you use with your Amphipod to get it to stay put? Am I doomed to used a hand bottle or a camelbak? I don't really want to run with a camelbak on because I don't like to wear packs on my back and I get easily overheated when I run.

Any help?