Running News Daily

London, July 19, 2025 – In a race that lit up the track with historic speed, Sinclaire Johnson delivered a breakthrough performance, setting a new American and North American record in the mile with a time of 4:16.32 at the London Diamond League.

Johnson finished fourth overall in a blazing-fast women’s mile, one of the deepest in history, but her mark carved out a place in the record books. She broke the previous American record of 4:16.35 set by Nikki Hiltz in 2023—improving it by just three hundredths of a second.

“It was a race where everything clicked,” Johnson said afterward. “I knew the field would be fast, and I just focused on hanging on and staying composed.”

The field was stacked with some of the world’s most elite, and the pace was relentless from the gun. While the win went to Faith Kipyegon, who once again demonstrated why she’s one of the greatest milers of all time, Johnson’s run signaled that American middle-distance running is thriving on the global stage.

This wasn’t just a personal best—it was a statement.

A Career on the Rise

Johnson, 26, has long been considered a top-tier talent in the 1500m and mile, but this performance confirms she’s entering her prime. She previously won the 2022 U.S. Outdoor 1500m title and has represented Team USA at multiple World Championships, but this is her first American record.

With the World Championships in Tokyo less than a month away, this performance couldn’t have come at a better time. Johnson now heads into the final stretch of the season as the fastest North American miler in history and a legitimate contender for a podium finish in Tokyo.