Look out, runners: There are a couple of new sheriffs in town — and they’re here to fact-check your social media posts. The running world is now reckoning with the Official Marathon Time Integrity Unit (OMTIU), an Instagram account that has become the de facto race police of the internet.
Since debuting last year, the account has racked up nearly 40,000 followers. Its page is filled with posts — stylized to look like FBI case files — detailing how runners posted false or misleading race times.
Often, the runners being investigated have large social media followings or even endorsements from running brands. That means they should be held accountable, according to the account, which says it aims “to restore truth, accuracy, and transparency to distance running.” In the account’s most recent investigations, even runners’ tattoos became the subject of online scrutiny.
As they demand transparency from runners, the account’s creators remain hidden. They didn’t respond to GearJunkie’s interview requests. In February, they agreed to an interview with Canadian Running Magazine, which identified them only as a pair of anonymous Australians.
In the vast online community of runners, the self-described Official Marathon Time Integrity Unit is often viewed as heroic. The account now sells Patreon memberships for ongoing financial support and has an online store selling merch. In some cases, though, runners question whether the public humiliation is entirely deserved.
What’s Your Real Marathon Time?
A primary source of misleading run times stems from the huge number of runners now using GPS watches paired with apps like Strava.
The marathon times recorded by these devices are not the official times recorded by marathon organizers. There are several reasons for this. For one, the runners themselves are in control of the watch, and could take breaks that don’t end up in the marathon time they post to Strava. In addition, GPS watches still have small errors, especially when surrounded by hundreds or thousands of other runners using the same GPS signals.
As a result, the marathon time recorded on a GPS watch and uploaded to Strava can often be significantly shorter than the official race time, which is often measured via a chip attached to a runner’s bib or shoe. So when a runner posts on social media using their GPS watch time instead of the official race time — they’re fair game for the “integrity unit.”
That’s what happened in November 2025, when the account published its investigation of Zae Mangu, a fitness influencer from New Zealand who participated in the Auckland Marathon. On Instagram, Mangu posted his Strava run time of 3:02, despite the fact that it ended 4 km before the finish line. His real time recorded by marathon officials was 23 minutes slower. The “integrity unit” called it “the largest infringement” it had discovered.
“This is the first of two cases this month of suspicious race times for this subject,” the Instagram account wrote in its report. “Pattern suggests there is a lack of respect for marathon events and their official timing systems. Recommend surveillance for all future races.”
Mangu did not respond to a GearJunkie message seeking comment.
‘Tolerance Has to Be Zero’
Several notable running influencers have thrown their support behind the work of these marathon detectives. Foremost among them is Craig Mabon, a Scottish triathlon coach with a large following on social media.
In December, he made a video explaining the difference between “Strava time and chip time,” and promoted the investigative work being done by OMTIU. Though the account’s work may “seem petty, the tolerance has to be zero,” he said.
“When someone is promoting products or services based on those performances, I think it’s right that they get called out for it,” Mabon said in the video. “If someone is lying to you about something as simple as a race time, you’ve got to wonder what else are they willing to lying about.”
However, the integrity unit’s insistence on accountability reached a new level with an April report analyzing runners’ tattoos. Three runners were called out for getting tattoos of their Strava run times — rather than the official times recorded by marathon organizers.
In all three cases, the difference in run time was 2 minutes or less. Many commenters celebrated the post, while several others said the account had gone a little too far by presenting “false tattoos” as wrongdoing.
None of the three runners accused of false tattoos responded to GearJunkie requests for comment.
Meanwhile, the self-appointed marathon sheriffs show no signs of backing down from keeping marathoners honest. In one of its most recent posts, the account posed the question: “Would you rather be on the Epstein list or get caught using your Strava time?”
In other words, you’d better use the official time when posting about your next marathon finish — or you could end up as their next target.
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50 Comments
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