Simone Biles won a record-extending ninth US all-around gymnastics title Sunday, signaling that she's a force to be reckoned with as the Paris Olympics loom large, despite a couple of miscues giving her something to work on before the US trials.

"Today it's just getting out here, getting comfortable and confident in my gymnastics, and hopefully going to Olympic trials and making that next step toward Paris," Biles told broadcaster NBC after piling up 59.300 points on the second night of competition at the US gymnastics championships, taking her total to 119.750.

She was almost six points clear of runner-up Skye Blakely, who totaled 113.850 with Kayla DiCello taking bronze with 110.800.

The top two finishers were assured of berths at the Olympic trials from June 27-30 in Minneapolis, Minnesota, where at least a dozen athletes are expected to make their final case for a trip to Paris.

Biles had cracked 60 points on the first night of competition on Friday, and, while she couldn't match that, she earned gold on all four apparatus.

"I couldn't be more proud of how I'm doing this time in the year, and just gaining that confidence, getting myself back in front of a crowd and just doing what I do in practice," Biles said.

The sheer power that has helped Biles grab four Olympic gold medals and build an array of daunting signature skills was in evidence in her low error count.

She stepped out of bounds after her triple-twisting double somersault in the floor exercise and skittered backward onto her back on the landing of her Yurchenko double pike vault.

The vault is so difficult that she still scored 15.00 points — down from the 15.800 she earned on Friday.

Biles said she has no trouble taking that kind of mistake in her stride.

"It's not my first time out there," she said. "I'm a little bit older, so I know exactly how to reboot and collect myself to move on to the next event, even if I feel like something wasn't how I wanted it to go."

Among those who will be trying to punch their tickets to Paris later this month, Blakely displayed impressive consistency over two days and Suni Lee, the Tokyo Olympic all-around champion, claimed an impressive fourth place as she continues her return from career-threatening kidney disease.

Shortly after competition ended, USA Gymnastics confirmed it had accepted petitions from Shilese Jones and Kaliya Lincoln to compete at trials, despite injuries this week.

Jones withdrew with a shoulder injury, while Lincoln pulled out on Friday with an ankle injury.

AFP