Are fitness trackers ever an accurate measure of running distance?
by Kate Carter from Technology | The Guardian on (#3NENY)
A recent report suggests that many trackers and apps can be miles off the mark - particularly over long distances such as the marathon
A report from Which? has claimed that some fitness trackers and apps are so inaccurate that they could measure as many as eight miles too short, or too far, over the London Marathon course. So how can you measure how far you have really run?
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