I bought these to train and run in the OKC Memorial Marathon last year and I love them. I only ran the 5k, so I am not a pro runner yet or anything like that but these work well for my needs. They offer good support, are very lightweight and have ventilation. Obviously, water can get into these, so if water is present you need to wear a different shoe. I feel as though I am not wearing any shoes at all when I run in these!