I wear a 6.5 in the kinvara 8's but these I needed a 7.5 thankfully I took the advice from previous reviews. The 7.5 fits really well. These are great. Feel like I'm on a cloud. Upgraded to these from the kinvara because those just wouldn't hold up past 15 miles and I'm training for a marathon. These seem to be holding up pretty well with the extra mileage. 4 stars just because the sizing is so off.