The shoes Sir Roger Bannister wore to break the four minute mile will be offered at Christie's.
They are among a fascinating selection of pieces featured in the Out of the Ordinary sale in London on September 10, with a valuation of £30,000-50,000 ($46,530-77,550).
The shoes were designed to be exceptionally light. Sir Roger Bannister explained: "I could see there was an advantage in having the shoe as light as possible.
"The leather is extremely thin and the spikes are unusually thin, as I used a grindstone to make them even thinner.
"These shoes are the last tangible link I have with the four-minute mile. All my trophies are now on display at Pembroke College Oxford, where I was Master.
"They served me great purpose, I'm grateful to them. I think it's the right time to part with them and I plan to give part of the proceeds to the Autonomic Charitable Trust (ACT) which encourages the area of neurological research to which I have devoted most of my life."
Please sign up to our free newsletter to receive exciting news about sports memorabilia auctions.