Matthew Fox isn’t just another fast guy with a YouTube channel—he’s one of the most well-known faces in the distance running community. But this week, the Australian marathoner and founder of Sweat Elite found himself in the headlines for something far removed from splits and race tactics: he was arrested in Japan on drug importation charges.
Fox, 38, was taken into custody in Osaka on April 9 after allegedly attempting to bring in tablets containing THC—the psychoactive compound in cannabis—via an international courier from the U.S. If convicted, he could face serious prison time and a lifetime ban from Japan.
Fox isn’t new to pushing limits. His marathon personal best is a blistering 2:18:41, and he’s currently in the middle of a self-imposed challenge to run one marathon a month in under 2:30 throughout 2025.
That brought him to Osaka for April’s race—but things unraveled fast. He dropped out of the marathon around 22K.
Then, in a social media post afterward, he wrote that he had “failed to manage the stressors of life brought on by my own decisions,” and added, “Some bad luck, but just many things I can improve on with decision-making around life and travel.”
That vague post suddenly reads very differently now.
“I Travel With THC Gummies” — But Not in Japan
Fox has been open on his podcast about using THC gummies to help with anxiety and sleep, something he said is “not a big deal in most countries.”
But he also admitted Japan was an exception. “I travel with THC gummies, and most countries don’t care,” he said in an episode earlier this year.
“But Japan is different—they tend to search you every time.”
He claimed to have left the gummies behind, fully aware of Japan’s notoriously strict drug laws.
Yet Japanese media reports allege that THC tablets were sent to him by mail in February, following a race and a brief ski trip in Japan.
It’s that shipment that triggered his arrest in April.
A Growing Audience—and a Growing Pressure?
Fox’s Sweat Elite YouTube channel has nearly 150,000 subscribers and is widely respected for its deep dives into the training of elite runners. He’s a podcaster, documentarian, and runner all rolled into one—a unique presence in a sport that often flies under the mainstream radar.
But along with that influence comes pressure.
In trying to maintain a brand, push personal limits, and churn out consistent content, Fox has sometimes skirted ethical lines before.
In 2023, he was banned for life from Japan’s Ageo City Half Marathon after bib-swapping for another runner—something that raised eyebrows but didn’t land him in legal trouble.
This time is different.
What Happens Now?
Fox denies the drug smuggling accusations, but Japan doesn’t play around with these laws.
The U.S. State Department explicitly warns travelers that even small amounts of cannabis—even CBD oil—can lead to arrest, detention, and deportation. For Fox, a conviction could mean years in prison, followed by a lifetime ban from re-entering Japan.
His arrest is a reminder of just how differently countries view cannabis. In the U.S., THC products are sold over the counter in many states. In Japan, even trace amounts can put you behind bars.
