Cyclist Nathan Clegg is gearing up for a charity triathlon event involving Yorkshire-born Olympians Alistair and Jonny Brownlee.
Brothers Alistair and Jonny go head-to-head in the Macmillan Brownlee Tri North at Harewood House in Leeds on Sunday.
Nathan gears up for triathlon - pictures
However, the winner was forced to withdraw through injury meaning Nathan was invited to step in.
“It’s a dream come true,” said Nathan. “I’m in awe of Alistair and would hate to let him down. I’ve been training hard all week.”
The triathlon is the sprint relay version of the event and the brothers will complete the 750m swim before handing over the baton to team members for the 26km bike ride and a 5.5km run.
Team Al’s runner will be Simon Lord, who was diagnosed with prostate cancer in 2010 and ran a half-marathon just 16 weeks after surgery.
Speaking about his team, Alistair said: “I’m really pleased with my teammates for the relay.
“Nathan is a strong cyclist and Simon’s story proves what a tough, determined athlete he is. I’m looking forward to lining up in Team Al.”
The Macmillan Brownlee Tri Series is part of Alistair and Jonny’s drive to encourage people of all ages and abilities to take part in the sport.
The event will start from the lake at Harewood House at 11am and spectators are welcome.
Entry for cars costs £5 but that covers car parking and admission to the gardens, grounds and adventure playground, which usually costs £14 per adult and £7 for children.
There will also be a full entertainment village with refreshments and activities.
Click here for more information.