Chas Newkey-Burden is a running fanatic who has run at hundreds of events including marathons, half-marathons and over 100 parkruns. He writes about running for The Guardian, Daily Telegraph, Metro and The i, and has contributed to Runner’s World and Men’s Health. He is the author of several books, including Running: Cheaper Than Therapy and his new book The Runner's Code: The Unwritten Rules of Everyday Running was released on 14th Oct. 2021.