A teenager is confident she could become to be the youngest woman to complete the Seven Summits challenge after climbing 14 Welsh mountains in under 24 hours.

Adriana Brownlee, and her dad, Tony, will climb Mount Kilimanjaro (5895m) at the end of the month - part two of the challenge.

Their mission - which involves climbing the highest peaks on seven continents - began last year when they reached the top of Russia’s Mount Elbrus (5642m).

The third Summit in their 2018 diary is Aconcagua, in South America.

Adriana said the Welsh 3000s challenge mentally and physically prepared her for the struggles ahead.

Completed over the sweltering May Bank Holiday, it was not easy. Their water supply ran out and the demanding descents, on the 50km route, damaged Adriana’s toenails.

Adriana said: "I felt I had been wearing high heels for 24 hours and couldn’t take them off, it was horrible.

"It was the toughest endurance test I’ve faced.

"Because it was so difficult, I think it has shown me I can do anything I put my mind to.

"Summit day for Mount Kilimanjaro will be half of what I did for the Welsh 3000s."

According to Joe Begley a local guide who was with them on the Welsh 3000s, "50 per cent of climbers who attempt the challenge fail to finish it".

Motivation from the guide, her dad and her inner resolve not to have to repeat the experience, drove her forward.

Tony, a seasoned climber, said: "Going downhill is really difficult, it puts a lot of pressure on your feet, toes and ankles, particularly on steep scree slopes.

"27 hours of continuing ascending and descending, which included the walk in and out, was very strenuous."

The highlight for Adriana was seeing a spectacular sunrise and the pride felt from conquering something so much bigger than herself.

"You are only a tiny speck on the mountains, so to conquer the peaks feels amazing. Very few people of my age have done it which makes it special too," she said.

Adriana spent months of rigorous training in a local gym, with a sports coach from St Mary’s University, and tyre dragging in Richmond Park.