A British runner who ran more than 100 kilometres across the island last week for charitable causes raised more than $5,000 through the event.

Adam Davis, from Buckinghamshire, England, started before sunrise on June 12 and covered the 101.9km by nightfall.

Mr Davis carried out the feat to raise funds for Action on Alzheimer's & Dementia, which will share the total money raised with a British-based charity.

He told The Royal Gazette that the challenge did not go as he had planned.

Mr Davis said: “The humidity, although I knew it would be humid, really took a toll on me, which throughout the day impacted the pace and timings due to the need to stop and refill water and eat more often.”

He set off at 5am from Devonshire Bay.

Mr Davis said: “I was on pace for the first stop at the world’s smallest drawbridge, getting there around 7am. I reached Dockyard by 8am then had my next stop at 10am, which was on Middle Road at 40km in.

“Up until that point it was going as planned.”

He added: “From 40km onwards to about 80km, the humidity really had me suffering and I lost track of the times. I was heading through Flatts around 2pm along the old Railway Trail, which was probably my favourite section of the run.

“I ended up about two hours behind schedule by the end of the run, finishing around 9pm, which was frustrating but I’m glad I finished.”

Mr Davis said he underestimated the challenge.

He explained: “It’s not that I underestimated the size of the task, but as I mentioned, the climate wasn’t something I could really train for, so I prepared as best as I could and it still hit me like a ton of bricks.”

The runner added: “I was in a bit of a bad way around Fort St Catherine, and if it wasn’t for the support of a few people, I’m not sure if I would have finished.”

Mr Davis said he was lucky to have company along the way.

After running alone for two hours from the start, he was joined by Elizabeth Stewart, the AAD president, at about 7am.

She ran for nine miles with Mr Davis and he was later joined by his partner, who lives in Bermuda, and Ms Stewart’s husband, Steve.

He said the two assisted him “massively” for the next 20km.

Mr Davis added: “As for other support, I had my girlfriend, Alex, and her auntie Susan meeting me sporadically with food, drinks, change of clothes and they really were the most important part of the challenge.

“Then a lot of messages of support from back home — it was quite overwhelming.”

Mr Davis said the funds will be split between AAD and a British charity that helps terminally ill people.

• Anyone who would like to support the fundraiser or donate to Action on Alzheimer’s & Dementia can visitaad.bm/donate