Paulson’s achievement is awaiting ratification by the International Ultrarunning Association (IAU). The Jackpot 100 Miles also serves as the USATF National Championship for the 100-mile distance, held on a certified loop course, making it eligible for record recognition.

The previous record was set by Caitriona Jennings just over three months ago at the Tunnel Hill 100, with a time of 12 hours 37 minutes 4 seconds.

Ashley Paulson celebrates after finishing the Jackpot 100 Miles 2026 on 20/2. Photo: Aravaipa Running

"I still can't believe it's real", Paulson said after breaking the women's 100-mile world record. "I keep asking myself if this is true. I trained and worked hard for this goal. Dreams can come true, as long as you keep fighting, showing up consistently every day, doing your part, and executing what you prepared".

Unlike the harsh desert terrain of Badwater, the Jackpot 100 Miles is a test of pace and mental fortitude, as athletes must run continuously on a 1,91 km asphalt loop. To surpass the old mark, Paulson needed to maintain an average pace of about 4 minutes 42 seconds per kilometer throughout the 160,9 km.

The American athlete started faster than required to build a time advantage. In the second half of the race, as her physical strength waned, Paulson's goal was to maintain a steady rhythm and not lose the accumulated lead, before crossing the finish line with her record-breaking time.

Ashley Paulson shatters the women's 100-mile world record.

Paulson began her career as a professional triathlete before fully transitioning to long-distance running. She has completed more than 130 marathons. In 2020, Paulson qualified for the US Olympic marathon trials, finishing 44th with a time of 2 hours 40 minutes 07 seconds.

Three years later, she gained attention by winning the Badwater 135 – one of the world's toughest ultramarathons, held in Death Valley, where summer temperatures can exceed 50 degrees Celsius. Paulson's time of 21 hours 44 minutes 35 seconds was nearly 2 hours 30 minutes faster than the previous women's record on the same course.

Beyond her professional achievements, Paulson's career has faced controversy. In 2016, she received a six-month ban under USADA's anti-doping policy while still competing in triathlon.

Her first victory at Badwater 135 was also questioned due to the race's specific nature, which does not require athletes to wear tracking devices. However, after analyzing GPS data and related parameters, Marathon Investigation concluded there was no evidence of Paulson cheating.

With this new 100-mile record, Paulson continues to affirm her position in women's ultrarunning, demonstrating the resilience of an athlete who has experienced both highs and lows throughout her career.

Hong Duy (according to Canadian Running Magazine)