Cancer Staging. Staging is the process of finding out how much cancer is in a personâs body and where itâs located. Itâs how the doctor determines the stage of a personâs cancer. For most types of cancer, doctors use staging information to help plan treatment and to predict a personâs outlook (prognosis). Although each personâs situation is different, cancers with the same stage tend to have similar outlooks and are often treated the same way.
As the other answers, the distance of Boston marathon is 26.2 miles or 42.195 kilometers, just like all other marathon. But you need run really fast to be qualified to take part in Boston marathon, that will take a long time, that would be years long.
To qualify for the Boston Marathon, athletes must meet time standards which correspond to age and gender. For the 2019 Boston Marathon, qualifying times must be run on or after Saturday, September 16, 2017. The qualifying times below are based upon each athlete's age on the date of the 2019 Boston Marathon (April 15, 2019). Achieving one's qualifying standard does not guarantee entry into the event, but simply the opportunity to submit for registration.