Koreatimes iconKoreatimesSep 24, 2026 ~1 min source read

Korean quadruped robot's marathon triumph featured in Nature

In the world of legged robotics, endurance has long been the ultimate hurdle. While four-legged machines can backflip, negotiate rubble and scale staircases with uncanny agility, their high-performance motors typically drain battery reserves in less than an hour.

Korean quadruped robot's marathon triumph featured in Nature

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In the world of legged robotics, endurance has long been the ultimate hurdle.

While four-legged machines can backflip, negotiate rubble and scale staircases with uncanny agility, their high-performance motors typically drain battery reserves in less than an hour.

Along the rural stretches of North Gyeongsang Province, a dog-like machine spent over four hours trotting past orchards and cheering spectators to rewrite the limits of mechanical stamina.

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The useful part

In the world of legged robotics, endurance has long been the ultimate hurdle. While four-legged machines can backflip, negotiate rubble and scale staircases with uncanny agility, their high-performance motors typically drain battery reserves in less than an hour. Along the rural stretches of North Gyeongsang Province, a dog-like machine spent over four hours trotting past orchards and cheering spectators to rewrite the limits of mechanical stamina.

How it works

  • Engineers at the Korea Advanced Institute of Science and Technology (KAIST) developed RAIBO2, a quadrupedal robot that completed a full 42-kilometer marathon on a single battery charge.
  • The milestone unfolded during the annual Sangju Dried Persimmon Marathon — a local race named after the agricultural region's famous fruit — where RAIBO2 lined up alongside human runners as

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