Eight days ago, Greg set off from Weymouth, radiating positivity about the 1,000km ahead. His mission: To raise a silly amount of money for Red Nose Day.

Somehow, a smile stayed on his face for the the next eight days - albeit with the occasional grimace.

On a tandem bike, Greg travelled up the UK, from England to Wales, back to England for a dash up the North, and through to Scotland for his finale.

He was joined on the saddle by the Prince of Wales, Tour de France winner Geraint Thomas, Gethin Jones, Alice Levine and a lingerie-clad Jamie Laing, amongst others.

Radio 1 listeners donated a huge amount to support his challenge - £4,041,910 and counting.

Image source, Comic Relief / Getty Images

And while raising a colossal sum, Greg also shared a very clear message: Spread positivity, be kind, embrace your community and you can make the world a better place.

"I think it's important to be a part of your 'village'," he said on Day 5. "Not necessarily a literal one. It can be your family, your friendship group, showing up to a friend's birthday when you really can't be bothered, helping your next door neighbour, doing extra stuff at your school."

"That's what I'll be most proud of, if people can think more about that... Because I've had to think about this stuff a lot more, coming out of the pandemic. When we were torn apart from each other, we desperately needed each other more and more. So we need to remember that while we can spend our life on our phones and have digital relationships with each other, we all do actually need to be together."

His heroic feats have been heightened by the fact that throughout the challenge, he's known that his dad is in hospital recovering from a stroke. His mum has shared updates from home, and Greg has stayed resilient in his determination to reach Edinburgh on day 8.

Crowds have been cheering him along the whole way - schools, nurseries, honking horns and plenty of dogs. And there were hundreds to welcome Greg to a sun-drenched Murrayfield for an emotional moment at the finish line.

"It was like going over the moon a million times in one second," one young listener said about the magic of being there.

And with that, we'll let him have a lie down, a very long bath and a few weeks away from a bike.

Greg will be in the Red Nose Day studio tonight from 7pm on BBC One and BBC iPlayer, reliving the best moments from a remarkable week.

• Read more: Greg James completes Comic Relief challenge, raising more than £3.3m

Image source, Comic Relief / Getty Images

Greg James
Live from Radio 1's Longest Ride

I'm going back to Weymouth - for £4 million I'll do anything! I can't tell you what good that will do.

£4 million?! Sorry my brain just actually stopped then!

Matt and Mollie have just revealed to Greg that the latest total is £4,041,910.

Just wow! Thank you so much to all the readers and Radio 1 listeners for all your donations. Your support is what has pushed Greg up all those hills.

Earlier Greg said, "£3 million would be like, wildest dreams. Anything over a million is a bonus." And now he's raised more than £4 million.

And you can still donate - if you haven't yet, you can keep donating via bbc.co.uk/greg.

"The whole trip has been really emotional but coming into Edinburgh, the emotions were running high, and to raise so much money for Comic Relief is incredible.

There's been a few moments where Greg has been really low and really struggling, and we've got to the top of the hill and there's people standing there all day, in all weather. It's really boosted him and given him the kick he needed to keep on going."

Greg James
Live from Radio 1's Longest Ride

My dad is a very, very wise man, and he always says, "Take this thing out of the situation, take the sting out of the situation. Remove yourself from it, just take a moment. That's done, next bit. That's done, next bit."

That's really what's seen me through. All that training. From my mum and dad, really, I guess. So this I dedicate this to them, and all the people that pushed me up those hills. We knew that this would be a near-impossible challenge.

Greg: Have you donated?

Bella: I've donated every single day, of course!

Greg: Did you think that I wouldn't do it?

Bella: I have so much faith in you, I knew 100% that you would do it. Once you put your mind to something, you are so determined. I knew it would be impossibly hard but I never ever doubted that you would finish it.

Matt Edmondson
Radio 1 presenter

Greg, I'm glad you're sitting down. We cancelled Newsbeat for this!

Greg James
Live from Radio 1's Longest Ride

Image source, BB

The thing I want to continue is what I've seen across the whole country... I've been through England, Scotland, Wales. What I've seen is the spirit of everyone coming together and being great and having a nice time. And please treat everyone you see like a minor celebrity on a tandem okay?

Wave at people. Be good to people. And if you can make someone's day you should, because it's been the biggest privilege to do this.

Greg James
Live from Radio 1's Longest Ride

My dad is hopefully watching me swear on the news. He loves rugby so much. He would love to be here at Murrayfield. This is an iconic place. All these people have turned up...

I am overwhelmed by the whole thing.

Thank you to everyone for following this.

Greg James
Live from Radio 1's Longest Ride

I can't believe it's done! I couldn't see, I just kept bursting into tears at everyone I saw. Please, let me get off this bike.

It feels amazing to complete that, to have done that amazing, to have pushed through it all, to be part of an amazing team, to have raised so much money, and to have finished!

It's been such a struggle at times but everyone has got me through it. The thing I will remember the most is the joy of seeing everyone. There was so much joy on that whole journey.

He's done it!

Greg James has cycled 1,000km over eight long, gruelling days from Weymouth to Edinburgh on his trusty tandem bike, and he's just arrived in Murrayfield Stadium to the cheers of a huge crowd.

What an incredible week, and what an incredible man.

We'll be hearing from Greg very soon, plus an update on the total amount raised.

Vick Hope
Radio 1 Presenter

We have the Royal Edinburgh Military tattoo, they look amazing. They've got drummers, pipers, dancers. It's going to be the most incredible welcome. The sun is shining over Murrayfield, it's a beautiful day. It's the perfect way to congratulate and see our Greg over the finish line.

There's so much love, so much support in this stadium. And we're all so so proud.

Calum Leslie
Presenter, BBC Newsbeat

He's said he's going to be back on his radio show next week, but we'll see how that goes...

James Tillotson
Reporting from the finish line

The crowd has started filing into the stadium ready to cheer Greg across the line!