Numerous home treadmills include adjustable slope settings

https://www.hometreadmills.ukgbbw471.westhavenscope.com/posts/the-reason-treadmill-for-home-is-so-beneficial-in-covid-19

Many home treadmills consist of adjustable slope settings, permitting you to replicate outside surface for stronger legs and much better workout range, whether you're training for hills or burning more calories.