I love this bra.  I usually wear a 36C in Bali bras and wear the same size in Moving Comfort.  I bought a white one years ago at Academy Sports and liked it so much that I went searching for it in other colors.  (Academy had quite selling it by then.)  Amazon had the best price and free shipping, so that's been my supplier.  I'm not a runner, so can't offer any info. about that kind of support.  However, I work with students ages 4-8, walk 2 dogs daily, and use weight machines.  I'm also very active in my garden.  This bra offers great support for my needs - much more than the regular Bali bras I used to wear.  I've made this my every day bra.  Looks good under all fabrics (t-shirts, sweaters, button-up blouses, etc.) and never have any problems with nipples showing.  I noticed some old reviews said the fabric was too stretchy.  Perhaps they've made fabric improvements as I noticed my older bras stretched out sooner than the newer ones have.