She Hip-Thrusted 639 Pounds for a World Record. She Left 31 Pounds on the Table on Purpose

MIAMI, Oct. 23, 2026 — Lilian Zamora Alonso could have lifted more. Before her world-record attempt, the Miami fitness coach had already hip-thrusted 670 pounds in training. On the day that counted, she went with 639 instead, and it was still enough to set the Guinness World Record for the heaviest weighted hip thrust by a woman.

Her reason for holding back is a very modern one: the paperwork.

## What a Hip Thrust Is

A hip thrust is a lower-body exercise. You rest your upper back on a bench with a loaded barbell across your hips, then drive your hips toward the ceiling using your glutes and hamstrings, WLRN explains. To count for the record, Zamora Alonso had to hold a straight line from knees to hips to shoulders for six seconds.

## The Numbers

According to Guinness World Records, she lifted 639 pounds (289.90 kg) at Miami Iron Gym on March 27, in front of witnesses, family and fellow coaches. That beat the previous record of 605 pounds (274.42 kg), set by Kaitlyn Callo in San Francisco on Aug. 29, 2024, by 34 pounds. Guinness compared the weight to "roughly the heft of a piano." In one training video, she worked up from 135 pounds to 635.

## Why Not 670?

Guinness records are approved from evidence: video, witness statements and documentation that its team reviews afterward. Zamora Alonso told WLRN that more weight meant more risk on camera.

"I was a little bit scared because you gotta record everything, you gotta send everything so they can review it," she said. "So more weight would mean more time recording, maybe a few mistakes that can happen... we didn't want that to happen, so we did 639 pounds."

It's a lifter's version of a familiar strategy: the record that counts is the one that holds up on review.

## Five Months of Waiting

Guinness told her to expect an answer in about three months. It took five. In the meantime she kept training at full strength in case reviewers asked for a redo, even after injuring her elbow and knee, WLRN reported.

When the answer finally arrived, the email's subject line read: "Congratulations, you are officially amazing."

She was so shocked that she didn't film her reaction, which she says proves the point. "That just tells you, as a content creator, when you don't record it, it's because you were in shock. I was crying," she told WLRN.

## From Water Bottles to a World Record

Zamora Alonso started lifting at 16 in her hometown of Santa Clara, Cuba, at a gym with very little equipment. "Sometimes I even did the upper body workouts at home with some water bottles," she said. Her husband, also a fitness coach, spotted a post about the men's hip-thrust record. When she looked up the women's mark, it was 605 pounds, just 25 pounds above her personal best at the time.

She hasn't ruled out going after the record again, maybe even her own. "I don't feel like this is the culmination of my journey," she wrote on Instagram, as quoted by Guinness. "I feel like it's the beginning of something much bigger."

Sources: WLRN · Guinness World Records · UPI