We use Outward Hound backpacks and LOVE it. We had another brand, can't remember the name, that kind of fell apart.
For water, we use the Gulpy water bottle and I bait it with a small amount of chicken broth to encourage her to drink.
We use Musher's Secret on her paws to keep them healthy. I feel like it's really beneficial, especially since we're urban runners and mostly run on the sidewalk or on our levees out here (with a ton of small rocks that could cut up her paws).
Due to her leash reactivity, we use a yellow leash with the words NERVOUS printed on it. It helps, A LOT.
Finally, we do use Doggles on the few days where it's really, really windy. I don't want crap getting kicked up in her eyes, just like I don't want crap getting kicked up in mine! We get some SERIOUS smiles when she models those.
And for her human companion, I do have a couple running shirts with a dog carrying tennis shoes on them. I'm proud to brag about running with my furry friend.