Race across the world has shown us we can get through anything together

Four famous duos have travelled nearly 6,000 km, hitchhiking through mountain towns, foraging in dense jungles, and battling challenges they never imagined, as contestants in Celebrity Race Across the World.

What began on the sun-soaked easternmost tip of Mexico is about to come to a close on Thursday night as the teams race toward the windswept Península de La Guajira in Colombia, the series' final checkpoint.

The budget, £950 per person - the equivalent cost of flying the route - was one limitation, but what else made the trip the challenge of a lifetime?

In the lead-up to the race, Tyler West and Molly Rainford had a flicker of apprehension.

While the couple knew each others' strengths and weaknesses inside out, life in the public eye often left them feeling like "passing ships in the night."

Their occasional holidays tended to have a single goal: complete relaxation.

This challenge offered something entirely different: a chance to push their relationship into new territory, and to reconnect without the usual distractions – for presenter and DJ Tyler, that meant not even his beloved Biscoff biscuits.

"It was a big question mark in our minds whether we'd even make it to the first checkpoint," Tyler admits.

"I remember looking at the final checkpoint on the map and thinking, 'How on earth are we going to get there?' But reaching this far really puts things into perspective - we're not as bad at travelling as we thought."

For actor and singer Molly, one of the biggest takeaways is a new-found confidence.

"Talking to strangers, asking people for help - those are things you just don't do anymore, but the race forces you into it," she says.

"It's given me so much more confidence that now I'm thinking, 'What have I got to lose?'"

And as for their relationship? "It proved to us we can get through anything together," she says.

For actor Dylan Llewellyn and his mother Jackie, the race was less about crossing the finish line first and more about getting out of their comfort zone.

After three decades of marriage, Jackie had never been away from her husband for more than a weekend. But she filled the freezer with steak-and-kidney pies and set off with her son, determined to embrace the unknown.

They learned lessons from past contestants: save more, spend less, and never - under any circumstances - let go of your moneybelt or passport.

"I can't believe we've got this far. I thought we wouldn't make it after leg one," says Jackie.

"I'm so pleased that we pushed ourselves through the lows, and I'm proud of us both for getting to the end of leg five."

The pair leaned on each other during the toughest moments but also learned the importance of asking for help.

"I don't think we realise how much kindness there is out there. And we felt it a lot," says Dylan.

"We felt so much love and togetherness with families and it was really strong and beautiful to see."

Before the race began, broadcaster and writer Anita Rani and her father, Bal, were excited at the idea of five uninterrupted weeks in each others' company. They hadn't travelled together since a family trip to India when Anita was just two years old.

As the oldest combined duo in the competition, they worried initially whether they would have the stamina to keep pace with younger teams.

But they know they have what matters most: determination.

"We're never going to quit," Anita insists ahead of the final.

"There's obviously been disappointment so far about the things that have been out of our control, but there's a life lesson in that, isn't there?

"When Guatemala closed down, we missed a bus, or whatever, all those things are completely out of your control, and it's very frustrating, but that's part of the journey."

For Anita and Bal, the race has become about far more than reaching the finish line.

They have treasured the time together and the chance to get to know each other better.

"Honestly, this is life, and this is what we've been through," Anita says.

"I think my dad has seen a more vulnerable side of me that I don't normally show."

Sibling duo Roman Kemp and Harleymoon were candid about their relationship not being as close as they would like: busy careers had reduced their interactions to quick spare-key handovers and dog drop-offs.

They are also, by their own admission, polar opposites. Singer-songwriter Harleymoon is the free-spirited adventure-seeker who is usually the last to leave any party.

Broadcaster Roman, devoted to his work and his beloved Arsenal, is naturally cautious about stepping outside his comfort zone.

For them, the race was an opportunity to become friends again and help them discover new sides of each other.

Roman and Harleymoon describe their time with a family on Panama's San Blas Islands as truly transformative.

Roman says the race "took me so far from where I am from".

"It was the biggest moment for me.

"It does make you realise that there's so much more to life… You see what makes these people happy and how happy they really are, which is just this family."

For Harleymoon, the experience of having nothing besides a few bananas and a hammock "in the middle of nowhere" sparked deep self-reflection.

"Your life has turned into something so simple but so beautiful — it's an amazing window to reflect and think, wow, we have so much at home, and yet we always strive for more," she said.

"Getting to experience days like that, when you're just so full of gratitude, was really amazing."