Naylor, from Wasdale Head, Cumbria, is famous for breaking the record for most fells climbed in a 24-hour period three times. He also ran the fastest known times on the Three Peaks, Welsh 3,000ers and Pennine Way.
Born in 1936, Naylor, a former sheep farmer, started running in 1960, earning himself the nickname of “Iron Man”.
In 1986, at the age of 50, Naylor ran all 214 Wainwrights in seven days. When he turned 60 he ran 60 Lakeland fell tops in 36 hours, and at 70 he ran 70 Lakeland fells.

His feats are endless, but one that really stood out for me was when, for his 70th birthday, he ran 70 Lakeland fell tops, covering 50 miles and 25,000 feet in 21 hours. A true inspiration.”

In February 2021, Naylor told BBC Countryfile he was still running two to three times a week on the fell tops, which he described as among some of “the best views on this earth”.

Naylor was a patron for the Brathay Trust, where he raised about £40,000 for the youth charity between 2007 and 2019. He was appointed an MBE for services to sport and charity in 2007.

Scott Umpleby, a fundraising manager at Brathay Trust, said: “He’s known for his incredible running achievements, but he used his running to support local charities, including disadvantaged children and young people