© BBC
The Strictly Come Dancing champion, who has undertaken the walk alongside celebrities including Dermot O'Leary, Craig David and Olly Murs, was one of several members of the team who struggled during the latest stage of the trek.
Scott Mills and Peter White both faced problems with growing blisters on their feet.
David commented: "This is so much harder than I ever thought and the heat is beyond anything I could have imagined. Walking in the midday heat is so intense but knowing that we are raising money with each step is keeping me going."
As they faced continuing across the desert with rising temperatures, Murs added: "Yesterday was tough but it is harder than ever today and I’ve got the feeling that’s the way this is going to go. Each day is getting harder than the last as we get further and further into the desert."
The group's journey is being filmed for a documentary which will be shown in the run up to Red Nose Day next month. Fans of the celebrities can continue to donate cash to rednoseday.com/trek.
> Sawalha falls sick on Comic Relief Trek
