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

> **Open Intelligence Dossier** · First detected: 2026-09-24 17:00 UTC · Category: World

## Executive Summary
A new quadruped robot from KAIST has successfully completed a full 42.195 km marathon using only a single battery charge.

## Intelligence Brief
A quadruped robot known as RAIBO2 has achieved a significant technical milestone by completing a full marathon distance of 42.195 km. Developed by the Korea Advanced Institute of Science and Technology (KAIST), the robot is designed to operate on a single battery charge for the duration of the distance. The achievement marks a demonstration of endurance and energy efficiency for four-legged robotic systems, which traditionally struggle with power consumption over long distances. This specific event establishes the RAIBO2's ability to maintain operational stability and power throughout the entire length of a standard marathon course. Coverage of this development has appeared across several prominent scientific and general news outlets.


DongA Science specifically identifies the robot by name as RAIBO2 and details the exact distance covered. Scientific American highlights the speed of the robot, noting that it completed the marathon faster than the average human runner. Other reports from Yahoo, Tech Xplore, and Nature emphasize the engineering feat of completing the distance on a single battery charge, framing the event as a breakthrough in robotic battery longevity and quadruped locomotion efficiency. The context for this development involves the ongoing challenge of power management in mobile robotics. Most current robot dogs or quadruped systems require frequent charging or battery swaps to maintain activity over several hours.


By successfully traversing 42.195 km without a recharge, the RAIBO2 addresses a primary limitation in the field of robotics. This capability suggests a shift toward robots that can operate autonomously in the field for extended periods without human intervention or external power sources, which is a critical requirement for real-world utility. Future observation will likely focus on the scalability of this battery efficiency and the potential for the RAIBO2 to perform tasks while maintaining this level of endurance. While the current coverage focuses on the successful completion of the marathon and the speed relative to humans, it does not specify the exact time taken to finish the race or the specific battery chemistry used. Observers will be looking for more data on the robot's performance in varied terrains and whether this energy efficiency can be replicated in other quadruped models developed by other institutions.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| Yahoo | Meet the four-legged robot that can complete a marathon on a single charge | [Source Link](https://news.google.com/rss/articles/CBMihwFBVV95cUxNNVNSWHVxbmpURzd4c1hyZGNEWklKc3VBbWJiSEJYcnRzaWIzbl9DZ2JQYkxmZmNGVEJHdEI2VXpOaFREaWUyQ18taWMtSm9KMWUzT2xLWTdlcDkwWWhQM1VXdTZfRjFuU21jRXZqTnRRY0Z0cU5ZdjhINHpVcVlfWER3S2MxMDQ?oc=5) |
| DongA Science | KAIST’s RAIBO2 quadruped robot completes 42.195 km marathon on a single battery | [Source Link](https://news.google.com/rss/articles/CBMiVEFVX3lxTE85eHh6dlJXMnBESGRvb0tySkFMLWhrYVZsNWttZ0hMYmhCQ2lJQnJyN2N3TFFFU0lXMTcxSHR2eTd4N3JLWlVkU3dvY0NkcHNHMVFNVQ?oc=5) |
| Tech Xplore | Robot dog runs a marathon on a single battery charge | [Source Link](https://news.google.com/rss/articles/CBMidkFVX3lxTE9wd01xY3R6eDZkbnItT2hzUE9rVkd4eFhWU0MwZ3dGLXh2a1JwMUJfU21OcHFaZHdrS1lEd2Y1Y2d0OWxQZTRDakwtalhROVlRVGJUc093WDRCYUVGN0FhMHhyS2Vtd09PMWtUSm42Z21UcUhiQnc?oc=5) |
| Scientific American | Watch a robot dog run a marathon faster than the average human | [Source Link](https://news.google.com/rss/articles/CBMiqgFBVV95cUxQdEl0Y25LeWtfLVRvNEdPVFpVcTl0Z0J0TVRsUUNQR2FrbWFaalY0ejZsYTRBT21qanFHQ0o3Z2M2SG9FTHdqUjNMSWZIVGkxWS1ONjZMSlRZUzhnbVFfVXBEM0FiakNFdnFRanNJTDNNeFRGenRieWJVelJfTzlCSFlkTFpldXZZU3Fldjh2ZFBIUVc1MnlJZEdfU21BV20ybFdzWW1YXzJEQQ?oc=5) |
| Nature | A quadruped robot designed to complete a marathon on a single battery charge | [Source Link](https://news.google.com/rss/articles/CBMiX0FVX3lxTE1qU3hWUmlSU28ybWxhTTBpSTVXZVVwY0xKQWZIZ3JHTjQtN0M1dGhubmxZekxhUExtS2QtN0RDWU1PVlpZZVRNQngtVG5DTmpBeldwZ2xGRVB1ZnZIdm9F?oc=5) |

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*Canonical Source: https://pulse.byoaiapps.com/trend/2026-09-24/a-quadruped-robot-designed-to-complete-a-marathon-on-a-single-battery-charge*