Glynn was a local Scout Leader from Old Windsor who was involved in organising the very first Windsor Half Marathon back in 1981 and continued up until 2008. Glynn was always the first one on site ready to set up and always the last one to leave.
Glynn continued to play an important role in helping to organise the Windsor Half Marathon, even after he had been diagnosed with terminal cancer. Glynn sadly lost his battle with cancer in the Thames Valley Hospice on 22nd Dec 2008 and thereafter the Fun Run has been known as the Glynn Shefford Memorial Run, in his memory.