Townsend, whose older brother Craig, was an outstanding amateur golfer, has hit upon playing a hole at each of the 21 golf courses within the Scottish Borders to raise funds for the My Name’5 Doddie Foundation.
He explained: “It’s been great to see rugby and wider sporting world get behind Doddie and help him raise more awareness and money in his battle against Motor Neurone Disease.
“Who can forget Doddie’s match-ball delivery with his sons, Angus, Hamish and Ben at BT Murrayfield before the Scotland v New Zealand match in 2017 and the very many other examples of folk expressing their love and admiration for Doddie.
“He has been relentless in his pursuit of finding a cure for MND and I wanted to contribute in some way before we head off to Japan for the Rugby World Cup.
“I have set a challenge of playing one hole at every golf course in the Scottish Borders, an area where Doddie and I grew up and still call home.
“The Borders Golf Challenge for Doddie takes place on Sunday 8 September with all funds going to the My Name’5 Doddie Foundation.
“There are 21 courses in the Borders and Doddie has promised to join me for the day.”
Asked about undertaking the challenge the day before beginning Scotland’s Rugby World Cup odyssey, Townsend added: “Rugby World Cup is obviously hugely important and in the white heat of competition it’s equally important to maintain a sense of perspective.