Here's the route in full ...
'I cannot wait – to finish'
Paddy will take in eight counties, including Flintshire, Cheshire and Lancashire, and finish the ride in Scotland before racing back down the motorway to Salford to appear live on TV for Children In Need this Friday.
Paddy says: “The main thing for me is getting people to donate whatever they can to help Children In Need.
“I am mentally ready for it now. I just want to get started.
“I’m planning on just eating a load of pies afterwards.
“Honestly, I cannot wait until we’re at that finish line in Glasgow.
“I’ll probably inhale a pint of Guinness when I finish. And then we’re in the back of the car and straight down to Salford for Children In Need on Friday night.”
What has Paddy said about his trek?
In an exclusive interview with The Sun, he told us: “I’ve got a half-decent level of fitness but this will break me.
“Training has been difficult. The first day they sent me the bike I tried to pedal up a hill and I thought, ‘Am I going to be able to do this?’
“The reality really kicked in when I found out the bike only has three gears and only two of them work.
“I know it’s going to be cold and wet too.
“But I feel as though I have been training for that all my life because I was brought up in Bolton, which is, you know, it’s like being in the Arctic tundra up there.”