I love these shoes so far but have only run in them 4-5 times and only on cement. I tried a different type of Mizuno's on in the store but not these specifically. They were recommended on the Mizuno website for my size, running style, etc and fit very well and feel lighter than my last shoes (also mizuno's). I like the color combination with bold red and blue but not overdone. I was worried about there being enough space in the toebox because otherwise my big toe gets sore/ingrown and I will get toe cramps and these seem roomy enough without looking like clown shoes and I have not had any issues with pain in toes or anywhere else for that matter. I would highly recommend these shoes.