Is there a third party that confirmed Stryd's accuracy? Robijn September 23, 2022 10:16 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 Why does my HR go up on an incline even when keep my power the same? Why is my power delayed when running intervals? Comments 0 comments Article is closed for comments.