Michael Benyon, a 29-year-old marathon runner with Down syndrome from Chirk, North Wales, is running 100K over one week to raise £10,000 for Mencap, a charity which supports the 1.5 million people with a learning disability in the UK and their families. The challenge will start on Sunday 6 October with Michael taking part in the Principality Cardiff Half Marathon and end on Sunday 13 October as he...