Oliver Chambers has climbed the equivalent height of Everest (8,849 metres) by running up and down Cronk ny Arrey Laa (437m) a total of 22 times non-stop, which took him 16 hours and 44 minutes.

The fell runner, from Port Erin, has so far raised more than £3,600 for local mental health charity Isle Listen with the ’Everesting’ challenge.

He ran a total distance of 56.15 miles (90.4 km) up and down the hill in the south of the island, equivalent to over two marathons.

Averaging a gradient of 20.5%, we asked Oliver if the feat proved more difficult than he expected.

’I knew it was going to be really tough, but in a different way,’ said Oliver.

’Physically, I still felt quite strong at the end, so I’m pleased that I managed my effort so well throughout the day.

’Mentally, it was very patchy with both highs and very low lows; I don’t think I was expecting the last three to four hours to be so tough.’

’Doing reps of the same hill became really mentally fatiguing later into the day and the last few hours felt like a lifetime.’

He said because of this he was grateful in the second half to have the company of fellow runners Christian Varley, Shaun McEntee, Nikki Arthur and Orran Smith - the latter being the prolific Manx fell runner who helped trained him for the challenge.

Oliver, who only started seriously running at the start of 2020, chose Isle Listen ’because I believe in what they’re doing,’ and because his mum and sister are involved with it and he is ’incredibly proud of what they do’, having watched the charity grow over the years from being a small operation.

Oliver ran with hiking poles to take the load off his legs, and for fuel ate trail mix, then sweet potatoes and wraps, and finally began ’relying on jam sandwiches because they were easy to eat’.

He would run four ’reps’ (repetitions, up the hill and down) before taking a brief stop to get more water and refill his backpack with food, or stop to give the odd interview to the press.

Asked how his body felt under the stress, Oliver told us: ’My body felt good throughout to be honest, I was really surprised!

’Orran’s coaching and Sam Murphy’s strength training really paid dividends.

’I had my feet quite heavily taped up, and that managed to keep the blisters away apart from one or two small ones.

’My quads and calves did start to feel tired and tight from the downhill, but they kept going for the day so I’m really happy with how my body coped.’

Lastly, Oliver said: ’A massive thank you to everyone for all the support, especially Island Escapes, I couldn’t have done it without everyone getting behind me and the charity.

’We’ve smashed the £3,000 target now, so I’m really happy with how everything has worked out’.

l People can still donate to his fundraiser at: www.justgiving.com/fundraising/oliver-chambers2.