Taking on the race from Africa to the Arctic are McFly drummer, Harry Judd, British racing driver and pundit Billy Monger, singer-songwriter Mel Blatt and broadcaster Alex Beresford.

The race intensifies as the four pairs must leave Pinhão in Portugal’s Douro Valley, and navigate 2000km through Spain and France to the second checkpoint in Bonifacio on the island of Corsica.

As the teams approach the halfway point, they must navigate their way from the Mediterranean island of Corsica to the third checkpoint in Zermatt, a mountain resort nestled in the Swiss Alps.

Budgets are dwindling and the intensity of the race is stepping up as the teams leave western Europe behind.

The race has reached its fifth and penultimate leg as the four celebrities and their loved ones navigate their way 1500km north from Sarajevo to Germany’s capital, Berlin.

It's a race to the finish line in Tromsø for the four celebrity teams. Which will get there first and be crowned champions?