My toughest run back to normality. When Sandra Otto discovered a lump in her breast in October 2010, she panicked and immediately sought out a gynecologist. Diagnosis: cyst. Thank goodness! But just under a year and several gynecological appointments later, the shock came: advanced-stage breast cancer! What now? Give up? That was not an option for Sandra Otto. Running had always been her constant in life, and it was to remain so. With her account, she wants to share with everyone interested how she specifically integrated sports into her acute treatments and her life with cancer. This is not just a success story with a happy ending. No, setbacks and exhilarating successes alternate. Sandra Otto searched within herself for a lifeline. And then she began to run back to life.