I know the US 24h record holder, Nick Coury from around the PHX trailrunning scene. He ran 173 miles in 24h on a track last year. Talking to him, it's all about

I know the US 24h record holder, Nick Coury from around the PHX trailrunning scene. He ran 173 miles in 24h on a track last year. Talking to him, it's all about meticulous training -- he's an engineer by background, so he basically measured and tweaked every variable, one at a time, until he found things that worked. Still, these runs are won and lost on efficiency -- to stay that focused for so long seems... uhhh... difficult. https://www.irunfar.com/nick-coury-24-hour-american-record https://www.irunfar.com/nick-coury-24-hour-american-record