George Kohler, 57, and his son Joshua Kohler, 23, from near Acle, have journeyed through 31 countries across four continents to raise money for UNICEF.

They are approaching the finish line on The Street in Halvergate after raising more than £36,000 for the UN agency.

George and Joshua Kohler are aiming to set three new world records. (Image: Joshua Kohler/PA Wire)

After setting off on March 29 last year, they are aiming to smash three Guiness World Records: become the fastest father and son to circumnavigate the world on bicycles, cycle through the most countries by a father and son, and travel the furthest distance by a father and son on bicycles.

Their astonishing odyssey has taken them right across Europe, Asia, South America and Australia, with Joshua vlogging the journey on his YouTube channel.

George Kohler and his son Joshua have been cycling around the world for UNICEF. (Image: Joshua Kohler/PA Wire)

They have journeyed across the Silk Road of Tajikstan, across the vast expanses of China, rainforest of Southeast Asia and the mountains of New Zealand and the Andes.

People can welcome them home on The Street in Halvergate on Saturday, May 2 at 2pm.

The duo are returning home to Halvergate on Saturday May 2. (Image: Malcolm Metcalf)

Afterwards, people can join them at the Halvergate QEII Playing Field bar where there will also be a pizza truck.