This weekend young people will be walking @TfL's entire tube network to raise money for the fantastic charity Lives not Knives. Well done to Eitan Okrent for organising this event! If people want to donate, please use the link below: https://t.co/cxq3iBWGoj

what’s trending’s fourth annual tubeathon — april 20, 2016

I had an excellent meeting today with Eitan, a Sixth Form student in Finchley who has gathered together 230 young people to walk the tube map. Together, they are raising money for @LNKcharity You can find out more and donate here if you’re able 👇 https://t.co/oYT0zGinmX

Dytto Popping Dance "Tubeathon 2016" Red Carpet https://t.co/O1TwSdqnMd

And #Tubeathon 2022 is complete! Back where I started at King's Cross. Visited all the Tube stations that weren't closed for engineering and raised £1000 for Macmillan Cancer Support! I am so grateful to everyone for thier contributions, retweets and likes. 😁

I liked a @YouTube video https://t.co/uom398tHKw Dytto does Popping Dance "Tubeathon 2016" Red Carpet

Anyhow, back at Euston on the Victoria HotLine. Time to tackle the Northern Line. The old man has a theory that the deep tube lines are the hottest because 'they are closest to Hell.' 🙄 #DadJoke alert. #Tubeathon

I am in awe of @EitanOkrent & his friends who walked the whole tube map to raise funds for @LNKcharity It was an absolute pleasure to attend the celebration party tonight. You can still donate, if you’re able! #tubeathon https://t.co/oYT0zGinmX

And reached Upminster! Other end of the District Line! Back across London now to do the final northern leg of the Piccadilly Line. And then it's done! 😁 #Tubeathon

Bakerloo Line complete, but very warm! Now for the District Line. The last complete line of the #Tubeathon! After that, the northern section of the Piccadilly and... it's done!

@UPnDOWNvids Good News! Following certain revelations during your 25hr Tubeathon, you might not have to go visit the Hubnuts or Whitelands to get more Welsh tea, good chance your local asda and sainsbury's (cheapest) stock it - both ours do. Hope you have recovered lost sleep.

Loo break and a quick drink with the old man in here. Apparently it's where he ALWAYS comes when he's in Borough Market. 🤔 Polished off a Brick Lane bagel with cream cheese and lox, and now back on the #Tubeathon! 😁

And so the Bakerloo journey begins! South from here all the way to Elephant & Castle. #Tubeathon

120 Teens Are #Walking The Entirety Of The #Tube This Sunday https://t.co/V4ymwE2Txr via @Londonist #London

..... And there, are no overground trains from Walthamstowe. 😡😡😡 #Tubeathon

The old man has just explained the Radio 4 quiz game Mornington Crescent to me. It makes no sense! 😂😂😂 Played it just now anyway. I won. Funny! #Tubeathon #MorningtonCrescent

Cracking on. Shuttle service to Kensington Olympia means another station ticked off! Tube is almost empty though. 🤔 Oh well, Upminster here we come (in about an hour and 15 mins anyway). 😁 #Tubeathon

At one end of the District Line, finally. Tennis anyone? 😁 #Tubeathon

Brixton Town! Hot, hot, hot down here. Back up towards Walthamstow now. The old man is wittering on about how amazing it is to have a signal in the Tube. Huh? There was a time when you couldn't? #NotaMorningPerson #Tubeathon

Heading back to St Neots now after another round of the Tubeathon but annoyingly have to go back...