I believe sometimes we need just a little information, not necessarily a diagnosis or treatment, on what is bothering us before we make a trip to the doctor. And as such, I am responding merely to provide very limited information and by no means a diagnosis or treatment. Often times, gymnasts experience a soreness, tightness, etc. And often times, they describe this as a "pain", which it may or may not be. In your post, you indicated you thought you had shin splints and at the end of your post, you were referring to the "upper portion of your calves". Shin splints (shins are located in front of your legs, that area between the knees and the ankles) are caused by inflammation. Runners tend to get more shin splints than other sports. In addition, shin splints can be caused by sudden or rapid increase of physical activity. It is considered an injury. Rest is usually the prescribed treatment and it usually takes a couple weeks to heal. I am not saying you need this or even have shin splints. I am merely speaking of what I know about shin splints. As far as pain in your calves when you run, it just may be sore or tight, or you could have pulled a muscle or something else. Lastly, it is hard to make out what part of the body you describe as the "top of your calves that is like a bone". If you are speaking of the area right below your knee and above your shins, and not your calves, my DD had this problem last year. I was a little concerned. She had this "pain" every time she did vault. As you can see, there are several things that need to be addressed or could be causing your "pain". As such, if the pain is bothering you, you should speak with your parents and maybe see a doctor. The last thing you want to do is work through the pain and cause more serious problems.