‹ back to 2026-09-25

A quadruped robot designed to complete a marathon on a single battery charge

Nature Robotics Choongin Lee, Donghoon Youm, Jeongsoo Park, Jeonghyun Lee, Suyoung Choi, Gwanghyeon Ji, Juhyeok Mun, Moonkyu Jung, Hyungho Chris Choi, Hyeongjun Kim, Hyunsik Oh, Kyungmin Nam, Minho Lee, Jungwoo Hur, Donghyuk Choi, Donggeon Kim, Yeonsu An, Jemin Hwangbo 2026-09-23

TL;DR - RAIBO2 is an energy-efficient quadruped robot that completed a full marathon on one battery charge. Its low total cost of transport demonstrates progress toward long-range, energy-efficient legged robots.

Completed the marathon in 4 hours, 19 minutes, and 52 seconds.
Achieved a total cost of transport of 0.25.
Its reported transport cost is lower than the cited human benchmark of 0.37.
The work was published in Nature on September 23, 2026.

view merged work →