Great news to report! fellrnr of http://www.fellrnr.com (a widely trusted source on evaluating running technology accuracy) ranked Stryd as the most accurate distance reporting device that they have tested to date. See the full report and supporting data here. Stryd is not only now ranked at the top of the industry, but Stryd's first placing comes with quite a large margin over the rest.
Stryd's precision (even when uncalibrated) particularly outshines the field. While maintaining high performance without calibration, Stryd has elevated the state-of-art in the run-tracking industry to a new standard. Both uncalibrated and calibrated, Stryd shows higher precision than any other device tested by fellrnr, showing consistent accuracy across day-by-day variations such as pace, run form, surface density, and others.