A young boy who had his leg amputated as a toddler is now the youngest amputee ever to climb the three tallest mountains in Scotland, England and Wales.

Albie-Junior Thomas, accompanied by his father Daniel, finished the U.K.’s Three Peaks Challenge in 22 hours and 30 minutes. It’s an endurance challenge where participants hike Ben Nevis in Scotland (4,413 ft.), Yr Wyddfa (also known as Snowdon) in Wales (3,560 ft.), and Scafell Pike in England (3,209 ft.), the highest peaks in their respective countries. They have to complete the challenge in less than 24 hours.

Albie-Junior, who hails from the town of Holywell in Wales, was 15 months old when his left leg was amputated; he was born without a fibula. But as his father told This Morning, “He does go through pain just being an amputee … But he just carries on and persists in pushing himself.”

They walked the challenge, Albie-Junior told the BBC, fueled by ham and cheese sandwiches and sour candy. During more challenging sections, he would “think of being home with my family or think of doing something really nice.”

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The family had done the hikes separately when Albie-Junior was younger, Daniel explained, having tackled Yr Wyddfa at age 4, Ben Nevis at age 5, and Scafell Pike at age 6. “So it was just on to the next. How can we top that?” he said.

When it came to the climbs, Ben Nevis was the most challenging, Albie-Junior told This Morning, due to the “bad weather.”

“It went really misty, rainy, and windy,” he explained.

Ben Nevis in Scotland.Getty
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“I thought it was going to be a hard challenge, so I just go for hard things,” Albie-Junior said. His next goal is to compete in the Paralympics.

About his resilient son, Daniel told the outlet, “I can’t find his limit yet.”