This will take even serious walkers. If you are a runner, you need to step up a bit but this one is very close to being that machine. Proform is doing a bang-up job with these machines so they could fool even the best observer but they haven't fooled us completely.
Although we have said bad things over the years about many Proforms, this one may make us a believer. So far so good. We started recommending this one last year and haven't heard from a single consumer that was disappointed.