While most teachers spent early September easing into the school year, Megan Eckert spent it running in circles in Hungary, for six straight days.

  • 636.482 miles covered in 144 hours, a new six-day world record
  • 1,140 laps of a 0.5581-mile paved loop in Balatonfüred, Hungary
  • 30+ miles by which she beat both her own women's record and the U.S. men's record
  • 40 years old, a middle-school math and special-education teacher from Santa Fe, New Mexico

Breaking two records in one race

Eckert entered the Global Organization of Multi-Day Ultramarathoners Six-Day World Championship aiming to beat two marks at once: her own women's world record of 603.155 miles, set in France the year before, and the American men's record of 606.243 miles, held by Joe Fejes since 2015.

She didn't just beat them, she demolished both by more than 30 miles, finishing with 636.482 miles and winning the race outright, ahead of every man in the field. Norway's Simen Holvik took second overall with 584.631 miles. Eckert also became the first woman to pass 1,000 kilometers in a six-day race, hitting that mark in 139 hours, 55 minutes.

How six days of running actually works

The event isn't a straight six-day sprint. Runners loop a short paved course for 144 hours, banking miles between naps, meals, and gear changes. Eckert reportedly took two-hour sleeps and 15-minute naps throughout, according to iRunFar, while holding pace against the entire men's field.

"It's the longest and the shortest thing," she told Runner's World afterward. "It's unbelievable. There's so much that goes on, so many ups and downs. But we had a good time. It's going to take a long time to process."

Results are pending ratification by the International Association of Ultrarunning, standard procedure for a record of this scale. It's Eckert's second time breaking the women's six-day world mark; she set it the first time in 2025 and came back a year later to break her own record by more than 33 miles.

What drives a 636-mile week

Eckert isn't new to endurance running's outer edges. Earlier this year she placed third at the grueling Cocodona 250 in Arizona, behind Rachel Entrekin and Courtney Dauwalter, then went on to win the Vermont 100 Mile outright. She also coaches high school track and cross-country in Santa Fe.

"I like to choose goals where I have a 50% chance of success and a 50% chance of failure," she said. "It's amazing what can happen when you go after goals that scare you, and that just might not be possible."

She finished the race about 14 miles short of the outright six-day world record of 650.919 miles, set by Russia's Ivan Zaborski in France the year before, a mark that, after this week, suddenly looks a lot more reachable.