One of the sisters competing for £20,000 in this year’s Race Across the World has promised viewers a “very intense” finish to the Bafta-winning show.
Elizabeth and Letitia, from Worthing and Lancing respectively, have been pitting their wits against four other teams as they aim to travel from China to India without smart phones or credit cards.
The pair are in second place – just seven hours behind leaders Caroline and Tom – ahead of Wednesday’s finale.
Speaking ahead of transmission, Elizabeth admitted the experience has been “exhausting” but worthwhile.
She told BBC Radio Sussex: “Normally when you’re travelling, if you’re feeling tired you can just sit down and relax… but, one, we want to have a lovely experience and we’re trying to make the most of it, but two, you’re in a race so it is exhausting.”
Balancing the desire to win against enjoying the experience has tested their resolve, and while Elizabeth says the pair know each other “way better” now, there’s still a lot to learn.
“I feel like I have understood how much there still is to know about each other,” she said.
Contestants can only spend the cash equivalent of an airfare between the start and finish points of their travels, which span more than 8,700 miles (14,000km).
Though being well-travelled and individually skilled proved helpful, the 33-year-old says the reality is “so different”.
“You’re tired, you’re confused, you think you know something… but anything can happen,” she explained.
Ahead of Wednesday’s finale, Elizabeth refused to reveal spoilers but said the episode is “very intense” as the remaining contestants bid to reach the final checkpoint.
While she would repeat the experience in a heartbeat, Elizabeth was depleted when she got home.
“I think I slept for a week in bed,” she admitted.
The finale of Race Across the World airs on BBC One at 21:00 BST on Wednesday.
