Greg James finishes his five triathlon #Gregathlon challenge for Sport Relief

Radio 1 DJ Greg James has completed his "Gregathlon" challenge for Sport Relief in Norwich.

He finished five triathlons in five days in five cities.

Fighting back tears, he told his listeners: "Thanks everybody for all your support. It's been the most ridiculous week ever. I've learnt so much about myself, everyone coming together and everyone being a team."

He's raised £750,000 for Sport Relief - so far.

To support Sport Relief and donate £3 text GREG to 70703. Costs £3 plus your standard network message rate.

Radio 1 tweeted a video of Greg finishing his challenge in Norwich.

Here are Greg's five top moments through the week.

Norwich

Before starting the final day of his challenge Greg received good luck messages from James Corden, Coldplay and Sharron Davies - among others.

Greg seemed happy when he'd finished his final swim.

The DJ punched the air in his home city.

He did his final run with Jim Chapman and cricketer James Anderson.

They both did bits of the run with Greg.

At the end of the challenge at Greg James' home city, he was clearly happy to finish.

He raised his arms in the town centre.

Sheffield

Eddie Izzard wishes Greg James luck at the beginning of the fourth day in Sheffield.

Sport Relief posted this video of the comedian.

Even former cricketer Geoffrey Boycott wished him well from South Africa.

He recorded a video for Test Match Special.

There was trouble in the middle of the bike ride when Greg fell off.

He got back on and carried on with the challenge.

Greg did his run through the city with Example and Nick Grimshaw.

They then did the swim in a pool in Sheffield.

Glasgow

Day three and Greg had his hardest day yet.

Here's a video of him being helped out of the water.

After some rest and recuperation, Greg was up and about again.

He had a bacon sandwich and a massage.

John Bishop wished him luck for his triathlon challenge.

He told Greg that he felt his pain.

Kimberly Wyatt also wished him luck and he finished day at BBC Scotland.

Here he is finishing day three.

Cardiff

Day two and EastEnders actor Danny Dyer wished Greg all the best.

He had this message for the DJ.

He did his swim in a pool on day two.

Radio 1 interviewed Greg after he finished.

And then he went running with All Time Low and nearly had a bath with them afterwards.

See what they did when he had a bath.

Belfast

Greg started his challenge with a good luck message from Coldplay's Chris Martin.

He wished him luck - well - sort of.

He finished the day by breaking a ribbon at BBC Northern Ireland.

This is the video of him completing day one.

Sport Relief posted a collage of pictures from day one.

It included his swim, run and cycle.

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