Just because you're in space doesn't mean you have to miss a marathon. Just ask astronaut Tim Peake. Sunday, the British national ran the London Marathon from the International Space Station.
Or rather, he ran the equivalent distance on a special space treadmill.
Peake showed off some of that equipment during an interview with British journalists before the big race.
"It's not very comfortable to run in," said Peake, a European Space Agency astronaut. "It's like running with a clumsy rucksack on. It tugs and pulls in different directions."
Running in space is pretty common — astronauts have to exercise a lot to keep up bone density and muscle mass in zero gravity — but Peake is only the second astronaut to run a marathon in space. The first was Sunita Williams in 2007.
Peake beat her time by a little less than an hour and claimed the world record for fastest marathon in space.
Peake last ran the London Marathon in 1999, when he was in his 20s — and on Earth. That time, he finished in 3 hours and 18 minutes.
Correction: An earlier version of this video incorrectly identified astronaut Karen Nyberg as astronaut Sunita Williams. The video has been updated.