As he finished, he said 'I feel so full of adrenaline' before later collapsing to the floor on a Pudsey - the Children in Need mascot - stuffed toy.
The enthusiastic star-jumping celebrity has been working out for a full day now, and after finally completing his day-long workout, he'll probably need a decent sleep.
Even people as fit as Joe probably shouldn't ordinarily work out for a full day, but it's all for a good cause, so it's probably fine.
In total, he raised £1,520,020, which is a pretty damn good effort.
Upon learning that he'd passed the magic million mark, Wicks - live on air doing his workout - exclaimed: "What?! No way! I love that,
"Thank you to everyone who donated last night and this morning. That is a million pounds, to help thousands of kids across the UK. What a generous country we've got, eh?"
Speaking ahead of his challenge, Wicks said: "2020 has been a challenging year for us all, so what better way to end it than by raising money for BBC Children in Need, a charity very close to my heart,"
Essentially, he's been performing a load of different activities throughout his shift, getting stuck into things like cycling, rowing, and boxing, but also some more relaxed stuff such as yoga.
It's not all been completely full on.
Loads of people have been joining him along the way - much like thousands did during Lockdown 1.0 - as the whole stunt has been streamed online.
Wicks' efforts mimic the marathon Karaoke challenge taken on by Rylan Clark-Neal last year, which raised over £2,000,000 for the charity, which helps out children and young people who are disadvantaged in the UK.
Back in 2018, the Strictly Come Dancing presenters Claudia Winkleman and Tess Daly performed a 24-hour dance-a-thon, raising more than a million quid along the way.
After that, Winkleman famously said: "I never want to dance again, I don't like movement."
It would be incredibly surprising if Joe Wicks finished this marathon and never wanted to exercise again, given that's how he makes all of his money.
If you want to donate to Wicks' efforts, or just to Children in Need in general, you can do so by visiting the website, phoning through on 0345 7 33 22 33, or by posting your donation to BBC Children in Need Appeal, PO Box 648, Salford M5 0LB.
You can also text DONATE to - for example - 70420, to donate £20.Featured Image Credit: BBC