My husband is a 40+ year old ultra/reg marathon runner and puts in lots of miles per week. This is the third pair of Brooks Green Silence he has purchased. He rotates between 3 different pair of running shoes depending on the race/terrain/the day. These shoes are great for the environment and easy on the feet. They are not quite minimalist but nearly. Normally he wears a size 10.5-11 dress shoes and he wears an 11.5 in this running shoe.