Last week, however, Bitter announced that he'll be going for a second 100-mile speed attempt, one that promises to be an even greater test of his mental strength.
On Saturday, Bitter will try to break the 100-mile treadmill record of 12 hours and 32 minutesaboug 7:30 per milecurrently held by Canada's Dave Proctor, all while racing in self-isolation on a NordicTrack x22i at his home in Phoenix, Arizona.
Even though Bitter may be practicing social distancing, supporters can still cheer him on virtually: A YouTube broadcast of the event featuring live commentary from distance running legends like Dean Karnazes and Ironman champion Dave Scott will air from 6:30 a.m. until 7 p.m. on the channel of energy drink manufacturer SFuels.
And if merely watching a guy run in place for up to 12 hours doesn't sound like your ideal Saturday, you can also participate in a more active way: Up to 250 runners can claim a spot to virtually join Bitter via Zoom connections that will sync up with the YouTube livestream.