As many are aware, Chad Kellogg was on Everest this spring with the goal of setting the speed record of Everest without Oxygen. He's already set the speed records on other smaller peaks. On Mt. Rainier, he set the speed record by going from the Paradise parking lot to summit to parking lot in five hours (the same amount of time it took our group to get from parking lot to Camp Muir). On Denali, he went from basecamp to summit to basecamp in 23h 55min. Absolutely incredible! Did I mention he survived cancer somewhere in there? Chad's goal for Everest was to climb it from basecamp to summit in under 20hrs and back to basecamp in under 30. Unfortunately, that didn't happen, but he gave it a valiant effort, and I doubt it was his last effort.
Anyway, here is a link to the fifth and final installment of videos that OR was making to document his attempt: