I'd actually recommend an incline treadmill. Roughly 10% grade 3mph will give you the same caloric burn as a run but will be significantly easier to perform and save your knees from the wear and tear of running.
The whole "running destroys your knees" thing is a very persistent myth. Running can cause temporary knee injuries, especially in beginners. In the long run it actually strengthens your knees. There has been quite a lot of research on this but unfortunately, it's still in the cultural zeitgeist that running is bad for your knees
Of course, every person is different. Anecdotally, my knees and hips are so much stronger now than they were 15 years ago after running over 20k miles.
The whole "running destroys your knees" thing is a very persistent myth. Running can cause temporary knee injuries, especially in beginners. In the long run it actually strengthens your knees. There has been quite a lot of research on this but unfortunately, it's still in the cultural zeitgeist that running is bad for your knees
Of course, every person is different. Anecdotally, my knees and hips are so much stronger now than they were 15 years ago after running over 20k miles.