Canadian ultrarunner Jamieson Hatt has etched his name into the annals of long-distance hiking by successfully completing the most extended unsupported trek in contemporary history. He conquered Wisconsin's formidable 1,160-mile Ice Age Trail (IAT) in a remarkable 30 days, 8 hours, and 59 minutes, shattering previous records. This extraordinary feat demanded immense self-sufficiency, as Hatt carried all necessary provisions for the entire journey, adhering strictly to the stringent regulations of unsupported Fastest Known Time (FKT) attempts.

Embarking on a thru-hike presents significant challenges, including exposure to the elements, a lack of modern conveniences, and severe physical demands. Undertaking such an endeavor unsupported amplifies these difficulties considerably. As per FKT guidelines, unsupported hikers are prohibited from receiving any external assistance. Unlike self-supported efforts, which permit pre-arranged resupplies and caches, unsupported athletes must transport all their gear and food from the starting point to the finish line. The only exceptions are water from natural sources or public taps. This means no cheering sections from friends or family along the trail, and no pre-arranged photographers documenting the journey. Communication is permitted via phone, but in all other respects, the athlete is entirely on their own.

Historically, the longest documented unsupported hikes were approximately 800 miles on the Arizona Trail, a feat accomplished by only two individuals. In 2024, Heather Anderson surpassed Art Brody's unsupported FKT on that trail, completing it in 24 days while carrying all her food. Inspired by these pioneers, Hatt pondered how he could push these boundaries further. He already held numerous FKTs, predominantly on shorter routes near his home in Ontario. His longest previous unsupported undertaking was on the 550-mile Bruce Trail, which he finished in 12 days the previous August.

Hatt initially questioned his decision on the first day of his IAT journey, grappling with a daunting 70-pound backpack. The sheer scale of the trail—over a thousand miles with 80,000 feet of elevation gain—loomed before him. He deliberately chose the IAT, despite its considerable length, because its terrain closely mirrored that of Ontario, making it a more comfortable and familiar environment for his record attempt. He found its designation as a National Scenic Trail, known for its challenging nature and picturesque landscapes, particularly appealing. Notably, there were no prior unsupported records on the IAT; the existing self-supported FKT was held by Collin Britton at 24 days, utilizing resupplies and other publicly accessible resources. Hatt's completion marks him as the first to undertake and finish the trail in a completely unsupported manner.

The idea of this ambitious endeavor had lingered in Hatt's mind for several years. He had postponed it, fully aware of the extensive preparation required. However, following his successful Bruce Trail record this winter, he decided it was time to commit. Setting FKTs in an unsupported style demands absolute dedication. Once the journey begins, there's no opportunity to swap gear, replenish food, or even fill a water bottle at a commercial establishment. Hatt dedicated months to meticulously planning his food and equipment for the IAT. His pack contained 30 days' worth of calorie-dense provisions, including nuts, chocolate bars, cookies, nut butter, and meal replacement bars, totaling 52 pounds and 123,000 calories, averaging 1.75 pounds and 4,100 calories daily. He also carried two pairs of shoes to prevent failure or joint issues caused by worn-out cushioning over the 1,160 miles.

His chosen 100-liter backpack, weighing 5 pounds when empty, was not his preferred option but was the only one capable of accommodating a month's supply of food and gear. Hatt vividly described it as 'carrying a piano on your back.' As his pack gradually lightened, he managed to increase his daily mileage to over 40 miles. However, 4,100 calories per day proved to be a minimal ration for such an extensive hike, and hunger became a persistent adversary. He shed over 20 pounds during the month and frequently experienced weakness. The IAT's long roadwalks also limited his camping options, often forcing him to settle for fewer miles than he was capable of to secure a safe overnight spot. With five days remaining, severe shin swelling impacted his pace and morale, yet he persevered.

Hatt expressed deep admiration for the IAT's meticulously maintained sections, winding through hardwood forests and ancient glacial formations. The trail's community also left a profound impression on him. Before his attempt, Hatt reached out online for information regarding safe parking and bus transport between trailheads. Local residents responded with offers of parking at their homes, spare rooms for his post-hike recovery, and even a ride across the state to commence his journey. A handful of these individuals, who were previously strangers, greeted Hatt at the finish line, offering him a refreshing tub of watermelon and much-needed emotional support. Unsupported endeavors are inherently solitary, prohibiting athletes from accepting even a cold soda from a 'trail angel' without jeopardizing their attempt. However, Hatt found immense strength in knowing the IAT community supported him, which helped him navigate the most challenging moments on the trail.

He confessed, 'When I really wanted to quit, I just was like…'I need to keep going because these people helped me out and I don't want to just pull the pin on this thing.' Hatt firmly believes he couldn't have continued much further without on-trail support, stating, 'I managed it just enough to barely get to the end. It's amazing what you can do if you somehow don't throw in the towel and give yourself a chance.' With this FKT, Hatt has surpassed the previous longest unsupported hike by nearly 500 miles. While he anticipates that someone will eventually push this boundary further, perhaps on Ohio's 1,400-mile Buckeye Trail, he acknowledges that his record is likely to stand for some time. 'I don't know how many people want to do that kind of thing, because it's not really super appealing,' Hatt muses, highlighting one of the less glamorous aspects of his achievement: 'I didn't shower for 30 days.'