I've been running with my new Bare Access Ultra and I love them. I have about 15 pairs of Merrell sneakers and sandals, so my feet are accustomed to 0 drop. This year I am training for my first Ultra marathon (I have run 2 marathons with the regular Bare Access) so I needed some cushion. I bought the 'Altra Paradigm' and did a couple of 20, 24 milers in them but found them so heavy and 'clunky' that I put them aside and went back to my Bare Access line...then I discovered your Ultra version and they were heaven sent directly to me!!!!! They are super light, good arch support and it feels as if you float from the landing to the toe off! Thank you, I just have one complaint: PLEASE, give us ladies some brighter colors, I need to get another pair!