Good for you, Joy. Thats a very worthwhile event. And 20 miles in a day is 20 miles. A long walk.
Id probably go with a hydration pack, as that takes care of the water-bottle part of things while leaving room for the other stuff you need. REI has a very sweet little pack out now called the Stoke 9 ($40; rei.com). It doesnt come with a water bladder; you buy that separately (get a CamelBak Omega for $28), or of course you can carry bottles. With 550 cubic inches of volume, its trim but has enough room for the things you need to carry, plus maybe a rain jacket (heaven forbid). Its highly adjustable and has a comfortable, breathable back pad and shoulder straps.
I also like Ultimate Directions Wasp ($75; ultimatedirection.com), which is just a bit smaller than the Stoke 9 but still has room for the things you need. Its very minimal and rides high and close to your back. The straps are very comfortable, so youll hardly know you have it on.
CamelBaks Magic ($75; camelbak.com) has the bonus of a womens-specific fit, meaning the shoulder straps and waist belt are designed to accommodate narrower shoulders and wider hips. It comes with a water bladder, of course, and has two zippered pockets for essentials. Its designed for cyclists but will work just great for a long walk. It doesnt come in pink, but it does come in a tasteful light blue and gray color scheme.
Have a great walk! Send us a report afterward.
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