I think long distance is quite similar to the shorter distances, in that you can train really hard and get decent. However, definitely to be an elite or Div I quality distance runner, you need a genetic disposition for efficient conversion of oxygyn and blood sugar to energy (02 uptake??). Anyway, I do think there is very much of a self-fulfilling prophesy when it comes to competitive gymnastics based on body type. There is no question that gymnasts need adequate training and conditioning to become proficient, and if coaches screen little girls based on certain physical characteristics and only those girls get the training they need to even try competitive gymnastics (assuming their crystal balls are even accurate on that), then OF COURSE good athletes in the sport will predominately have those characteristics. Self-fulfilling prophesy. Where does genetics come into play for non-elite athletes? VERY difficult to determine that, given how much body type screening is happening of itty bitty girls at some gyms. However, to make it to the top "elite" level do there need to be some god-given physical gifts? Yes. Of course. But many sports will let many athletes and body types train hard and see what they can accomplish, and few are as self-selecting as gymnastics, where you aren't given a real chance to reach your potential and do team training at some gyms unless you have what is perceived as elite athlete potential body types, or know the preteam coaches etc. Even if that gym has only produced one successful elite athlete in the last ten years, buy hey hope springs etermal. Quite unfortunate in some ways. It's a private gym system, though, so it isn't going to change much. There is also a huge pool of kids with tougher socioeconomic situations who will never know if they could have been a great gymnast, because it takes financial resources to train in the private gym system in the US, and this sport is just not much available to folks who can't afford to pay for it. I understand that, since the owners are running a private business, and they can't survive or thrive unless it's a financially feasible business plan. I love distance running, anyone can training hard and see what happens. It doesn't take a lot of money, and you aren't "out on your rear" if you haven't been selected as having team potential when you are 4-8 years old. Put your foot to the line and the first one across the lines wins. Lace up your shoes and train as hard as you desire. It's a beautiful thing. Back to gymnastics, Excel is great in that more athletes are getting a chance to compete, but again, if certain body types are in Excel and they are getting half of the training and conditioning, coaches who don't spot as much etc., it is still a self-fulfilling prophesy in terms of who the "best" gymnasts are..... Just sayin.