Looking for Answers about New Balance 20 Minimus Trail 2 - Men's?

You are correct about the widths for each category, although I haven't really seen a racing flat in a wide category...unless we just don't carry them. But usually they are offered in a men's 'D' width and a women's 'B' width as you have stated. Yes, the last of a men's shoe is wider, but that is just the general difference. Manufacturers who are committed to the women's running category will construct women's shoes differently because they know there are different running bio-mechanics between men and women. Because of the hip difference, women tend to pronate more than men. Designers take this into consideration and work on addressing this by having a different midsole/outsole on a womens version that can offer women the extra support they need. And if they do use a women's specific last, it is shaped a bit differently from the men's version because of the differences between gender's feet. Women will normally have a narrower heel and forefoot, plus a lower instep than men--consequently the running shoe cannot simply be a smaller version of the man's. A woman's running shoe needs to be designed differently to accommodate the narrowness of a ladies foot. In short, the women's shoe will probably feel snug for you since you have become accustomed to a man's shoe. But overall, a women's shoe is best to use if possible. I noticed there is a women's version of the New Balance 20 Minimus Trail 2 shoe...sku #202700.