Casey Neistat spent 17 years failing to run a marathon in under three hours, filmed most of it, and turned the attempt into one of the most watched running stories on the internet.
Neistat was born on March 25, 1981, in Gales Ferry, Connecticut. He dropped out of high school at 17 and had a son the same year. He moved to New York and began making films with his brother Van, working alongside the artist Tom Sachs from 2001.
His first wide audience came in 2003 with iPod's Dirty Secret, a three-minute film attacking Apple's refusal to replace iPod batteries. It spread far enough to draw mainstream press coverage, which established the pattern for most of his career: a small, cheaply made film with a clear grievance at the centre of it, reaching an audience out of proportion to its budget.
HBO aired The Neistat Brothers in June 2010, the same year he opened the YouTube channel that would define the next decade of his work. In 2012 Nike gave him a budget to make a film for its Make It Count campaign. He spent the money travelling around the world until it ran out and delivered that as the film, which remains the piece of commercial work he is best known for and set the template for how brands would work with creators for years afterwards.
The daily vlog he began on March 26, 2015 made him one of the defining creators on the platform. He co-founded the video app Beme that July, sold it to CNN in November 2016 for a reported 25 million dollars, and left the partnership in January 2018. He opened the creative studio 368 in New York in April 2018, running it as a workspace and community for other creators, and announced its closure in February 2024.
Running ran alongside all of it. Neistat is a New York runner in the most literal sense, and his films made the city's routes, its marathon and its running culture legible to an audience that had no other reason to look at them.
His filmmaking style, built on fast cuts, first-person narration and a camera held at arm's length in traffic, became the default grammar of the vlog. Applied to running it produced something the sport did not have much of: race footage that looked like the inside of the experience rather than a broadcast of it. A marathon shot that way is not a results feed. It is two hours of a person negotiating with themselves, which is what the race actually is.
The sub-three-hour marathon became the throughline. Beginning in the mid-2000s, Neistat ran marathon after marathon and missed, 24 times across 17 years, and kept publishing the failures rather than burying them.
That is the unusual part. Most running content documents a success after the fact, with the difficulty reconstructed in hindsight and the outcome never in doubt. His documented a decade and a half of not getting there, which is the condition most runners actually live in. The audience knew the ending was not written.
In November 2023 he ran the New York City Marathon in 3:01:27. It was a personal best on that course and 88 seconds outside the target he had been chasing since his twenties. For a goal measured in seconds after 17 years, it was the cruellest possible result.
Five weeks later, on December 10, 2023, he ran the Tucson Marathon in Arizona in 2:57:34, averaging 6:46 per mile. He crossed the line alongside his coach Roberto Mandje, a senior advisor on engagement and coaching at New York Road Runners, who had guided the final block of training. Neistat was 42. "I failed my first 24 attempts," he said afterwards. "Today, I did it."
He has also completed three Ironman triathlons, though none of them carried the same weight in his work.
Neistat has never presented himself as an athlete, and that is most of why the story worked. A sub-three marathon is a serious amateur benchmark, cleared by a small fraction of the people who finish the distance, but it is not an elite time. It is fast enough to be genuinely difficult and slow enough to be imaginable, which makes it the rare running goal a general audience can hold in their head and measure themselves against. Nobody watching thinks they will break the world record. Plenty of them think they might break three hours.
The effect on running media was durable. The sport's coverage had long been split between elite results and beginner instruction, with very little addressed to the committed amateur chasing a hard number over years. Neistat filled that gap by accident, and a generation of running creators has worked in the space he opened.
He returned to the New York City Marathon in 2025, still racing, with the goal that shaped 17 years of his running now behind him.