A Russian engineer claims to have invented an "exoskeleton" that allows the walker to walk up to 3 times their normal possible range. This device, the Kineticstep, reportedly augments or supports normal walking motions with specific engineering breakthroughs. It is mainly directed at people with walking difficulties or impairments.
https://www.notebookcheck.net/Kineticstep-a-crowdfunded-exoskeleton-that-wants-to-take-all-the-effort-out-of-walking.336612.0.html