Astronaut Scott Kelly’s weekly running routine has been out of this world

My one-year crewmember Misha Kornienko and I on day 300 aboard @iss! #YearInSpace #300days #space #spacestation #iss #endurance

A photo posted by Scott Kelly (@stationcdrkelly) on Jan 21, 2016 at 1:21pm PST

American Scott Kelly ran approximately 1,042 kilometres (648 miles) over a 340-day stretch that is expected to end on Tuesday night. Kelly, a U.S. astronaut, did all his running in space on a special treadmill aboard the International Space Station.

NASA called the 340-day duration in space the “Year in Space,” the longest a NASA astronaut has consecutively spent in orbit. The U.S. federal agency has astronauts exercise to limit the weakening of bones and muscles in the zero-gravity setting.

RELATED: Running in space.

Bungee cords replace the sense of gravity and help keep astronauts in place while using the treadmill. The trip will be just short of a full year.

Kelly did his runs on a specialized treadmill named Colbert, named after American actor and comedian Stephen Colbert. NASA allowed the public to vote to name the machine, and Colbert encouraged the viewers of The Colbert Report (the show is now known as The Late Show with Stephen Colbert) to vote in his favour.

RELATED: Astronaut Tim Peake to run London Marathon from space.

Kelly is expected to land Tuesday, March 1 in Kazakhstan. More facts about the mission can be found below:

Beyond his running endeavours, Kelly will have travelled 231,498,541 kilometres during his time in space.

Successful Spacewalk Today: NASA astronauts Scott Kelly (@stationcdrkelly) and Tim Kopra ended their spacewalk at 11:01 a.m. EST after accomplishing all objectives. They released brake handles on crew equipment carts on either side of the space station’s mobile transporter rail car so it could be latched in place ahead of Wednesday’s docking of a Russian cargo resupply spacecraft. The ISS Progress 62 resupply mission launched at 3:44 a.m. EST this morning (2:44 p.m. Baikonur time) from the Baikonur Cosmodrome in Kazakhstan. Kelly posted this photo and wrote, “Fix was pretty easy, but the rest always a challenge. With great team on earth we got it done safely.” Image Credit: NASA #nasa #spacewalk #iss #spacestation #yearinspace #earth #repair #progress #spacecraft #timkopra #space

A photo posted by NASA (@nasa) on Dec 21, 2015 at 3:36pm PST

In addition to running, Kelly seems to have a knack for ping pong as can be seen in the below video:

Ping pong in space, anyone? NASA astronaut Scott Kelly, who marked day 300 of a historic year in space on Jan. 21, shows off another fascinating feature of life in microgravity. Kelly used two paddles with hydrophobic, or water repellant, features to pass a sphere of water back and forth. Scientists use the microgravity environment of the space station to advance scientific knowledge in Earth, space, physical, and biological sciences that otherwise wouldn’t be possible down here on the planet. The paddles are polycarbonate laser etched so that the surfaces are actually arrays of 300 micrometer posts (0.3mm). The surfaces were then spray coated with a Teflon coat. The combined effects of surface roughness and non-wettability produce a super-hydrophobic surface capable of preventing water adhesion in dynamic processes. The larger the drop, the less force it takes to break it up. The smaller the drop, the harder you can hit it. Scott is demonstrating about a 4 mL drop (over 100 times larger than a rain drop). Credit: NASA #nasa #space #spacestation #pingpong #yearinspace #iss #science @ISS

A video posted by NASA (@nasa) on Jan 26, 2016 at 2:02pm PST

A video of how the treadmill works can be found below: