cried when his mum left him a voice note during his Red Nose Day challenge on Sunday, as his dad recovers from a stroke.
The Radio 1 Breakfast DJ, 40, who is cycling 1000km in eight days on a tandem bicycle for , received the sweet message during a gruelling day three of the challenge.
In the message, she said: 'Hello sweetheart, it's Mother's Day, and I'm so lucky to be your mum.
'You make me proud every day. But I'm especially proud of the courage and determination you showed in tackling this massive challenge.
'You know how much I love you, and you know that I will be with you every inch of the way. Keep going, darling. You can do this.'
Greg went on to explain live on air that his mother was a PE teacher and before his challenge she gave him one of her whistles.
Greg James cried when his mum left him a voice note during his Red Nose Day challenge on Sunday, as his dad recovers from a stroke
The Radio 1 Breakfast DJ, 40, who is cycling 1000km in eight days on a tandem bicycle for Comic Relief , received the sweet message during a gruelling day three of the challenge (pictured with his father)
Greg is currently pedalling towards Edgbaston to finish off day three of his Comic Relief challenge after he was joined by a squad of leather-clad bikers in Red Noses on his journey back into England from Wales.
Last Friday, Greg cancelled his show to be with his family after his father suffered a stroke during a planned heart operation.
He then returned to work on Monday, confirming his father, 'big Al', is doing okay and is 'still with us.'
He said: 'Thank you to Sam and Danni for Friday, as there was a slight mishap with my dad. My dad's not very well at the minute'.
'I know that he would want me to get back on the show. And he's still with us, which is good!'
And Greg said his father is 'fighting hard' and would be taking 'small steps' on the road back to recovery.
Previously talking about the challenge on his show, Greg said: 'Here's a video which is more serious than I like to be on here, but I just wanted to update you on what's [been] going on the last few days of my life.
'I've had a terrible time. My dad's not very well. Not very well at all. And it's horrible.
In the message, she said: 'Hello sweetheart, it's Mother's Day, and I'm so lucky to be your mum. 'You make me proud every day'
Greg went on to explain live on air that his mother was a PE teacher and before his challenge she gave him one of her whistles
'You might have heard Sam and Danni talk about this on the Breakfast Show on Friday, because I wasn't there. They were very lovely about it; they told lots of you, and thank you for sending me a message if you did. It's massively appreciated.'
He said: 'In times like these, it's so nice to feel the love from people.'
Greg added: 'And for those that don't know what's happened to my dad, I'm sorry that you're finding out on my wildly popular social media channels.
'He was supposed to go, well, he did go in for heart surgery on Thursday, and I was on the Breakfast Show on Thursday because I thought, 'That's a good distraction.'
'I'm always banging on about how great radio is at distracting you from your life and things going to s**t. It's good for listeners, and it's good for the people doing it as well. So, I was happy on Thursday. I thought, 'That's the best place for me.' I love doing that.
