Been running for over a year in the=is shoe. Just got my second pair and wouldn't use anything else. First pair bought in the USA have done close to 700 miles and still good for training just not up to the race day anymore hence my second pair. Can feel how much hammer my old pair has taken having been in the new pair but still doing great to get my moneys worth from them. I'm a toe runner it has to be said but heavy on my feet at times. Great shoe but remember to go up a half size as they run smaller.