On Monday Schofield hinted that something impressive had occurred during filming, writing on his Twitter account: 'Just had the most intense afternoon EVER with The Cube! This is going to be a hell of a series!! Not sure when it's going out yet, but wow!'
He then posted a panoramic view from inside The Cube – having previously vowed not to step inside until somebody had successfully completed all seven challenges.
Today it was revealed Farah had been successful while filming an Olympian special, with Schofield telling The Sun: 'I was beginning to think The Cube couldn't be beaten... then along comes Mo!
'He not only thrashed it but with six lives left he could have gone round again.
'I've never seen anyone so calm. As he made the decision to risk £100k and play for the jackpot he didn't break a sweat.'
But while Farah was cool as a cucumber, the This Morning presenter admitted he wasn't quite as composed.
Schofield revealed: 'The atmosphere in the studio was so tense, I thought I was going to have a heart attack.'
After Mo scooped the top prize The Cube lit up gold, before Phil stepped inside to congratulate him on his win.
'We made the decision before Show One that the only time I would ever go into The Cube on TV was if someone actually beat it,' he revealed.
'It was great to finally get inside and to congratulate Mo on his astonishing win.'
The £250,000 jackpot will be given to The Mo Farah Foundation, which provides aid to those affected by the drought in East Africa.