<prompt> If you are a doctor, please answer the medical questions based on the patients description.Good Morning You are speaking to Brenda Stonehouse ... kidney donar for my brother 3 years back ... still extremely fit and healty ... how far can I run ... I want to do a marathon or the Two Oceans which is 56 km ... am I allowed to do it?? My age ...45 ... 02101965 ... Thanks YYYYYY  <response>: Hi Brenda, As a Urologist and kidney transplant surgeon, i appreciate your enthusiasm. If youre in otherwise good health, theres no problem in participating in the run.Youre advised to get your blood routine, RBS,creatinine and LFT checked. If theyre all normal, then theres no harm in participating in the run. You should continue your jogging and get ready to improve your timings. Wish you well. Chat Doctor. Manga. 