Holly Willoughby and Freddie Flintoff introduce live action from the Lee Valley VeloPark where Alex Scott is trackside for coverage of night four of the contest. The competition is reaching it's climax as 12 celebrities take on the sporting challenge of a lifetime. Tonight's action sees the women take on the keirin race, while the men go wheel to wheel in the elimination race. Also includes coverage of the women's speed climbing event.

S1 Ep4 65min