On April 16, 2007, Sunita “Suni” Williams ran the Boston Marathon. But she wasn’t in Boston. She wasn’t even in the United States.
Inside the International Space Station, more than 250 miles above sea level, the NASA astronaut became the first person to run a marathon in space.
Williams, now 59, found her endurance tested again in June 2024 after the Boeing capsule that brought her to the International Space Station malfunctioned. Her expected eight-day trip with fellow astronaut Butch Wilmore lasted nine months. The pair splashed down safely in Florida on Tuesday evening, and traveled to Houston that night.
While in space, astronauts must exercise two hours per day, every day, according to a NASA pamphlet, as zero-gravity conditions can cause “bone and muscle deterioration” over time. Williams worked out first thing as part of her morning routine — waking up at 5:30 a.m. GMT and “running, cycling, and weightlifting” until 7:30 a.m., according to ESPN. (NASA did not immediately respond to CNBC Make It’s request for comment on the amount of control Williams had over her schedule.)
Wilmore and Williams will now have to spend 45 days re-acclimatizing to Earth’s gravity, NPR reports. Their new routines will include a “personalized recovery program” of two hours per day that they spend exercising with personal trainers.
