Is there a third party that confirmed Stryd's accuracy? Robijn June 22, 2020 19:49 Updated Follow Stryd is accurate out of the box and does not require calibration for most runners. Do not take our word for it, check this article on FellRNR.com. Related articles Distance and Calibration Critical Power Garmin Compatibility with Stryd How do I get three metrics from Stryd Zones on my Garmin watch? Why does my HR go up on an incline even when keep my power the same? Comments 0 comments Article is closed for comments.