Owain Wyn Evans has admitted his 400-mile Children in Need cycling challenge is "hard" as he prepares to reach the finish line in Cardiff on Friday.
The BBC presenter has been cycling through Scotland, Northern Ireland, England and Wales since Monday morning, when he began in Glasgow.
Live update on The One Show
As he reached the day's finish line on Thursday, 12 October, Owain spoke to The One Show presenters JB Gill and Lauren Laverne live while cycling the last few miles.
"I'm telling you guys this is hard," Owain said, as JB asked how the challenge was going. Panting as he continued cycling up a hill for another two miles, Owain reflected on the celebrity guests that surprised him throughout the week, including Carol Vorderman dressed as a daffodil, and his husband Arran and dog.
Emotional moments and motivation
As he continued, Owain stressed the importance of his challenge for Children in Need, but was struggling to speak as he focused on his breathing.
"No child should be left behind in whatever way that is," he said, but could be heard saying "Oh god," under his breath as he struggled to continue.
He went on: "That's why we're doing this and we want to raise as much money as possible, and this is coming from someone who hated PE at school and was always last chosen and the PE teacher would never let me part of it."
Difficult day in Wales
Earlier this morning, Owain spoke to BBC Breakfast presenters Charlie Stayt and Naga Munchetty, admitting he was "dreading" the day.
He shared: "Oh Naga, I tell you what I'm not feeling good today. It's been a long old couple of days and today is the day I've been kind of dreading."
"It's so weird, I'm back in Wales in my home nation but today's a long hilly day, wherever you look around us now, hills everywhere, my knee's playing up, got a bad back, I'm absolutely zonked."
He added: "Well I tell you what, this is the first time I've been on a road bike. This is all very new to me but it shows you can get into something that's good for you if you put your mind to it."
"Am I enjoying it? Not with this knee and not with this back today but as you say look at this? I try to take it in as it's all so beautiful," he continued.
BBC Children In Need will air on BBC One and BBC iPlayer at 7pm on Friday, 13 November.
