Rosie Clarke is determined to improve on her personal best in the 3,000m steeplechase again before the end of the season.

Since delving into the discipline three months ago, the 24-year-old Epsom & Ewell Harriers athlete has twice lowered her times.

The latest of nine minutes 51.97 seconds came at the Muller London Anniversary Games IAAF Diamond League event last weekend at the Olympic stadium.

Tunisia’s Habib "Bibi" Ghibli warmed up for the defence of her Olympic title next month with a convincing season’s best victory of 9:21.35, well ahead of American Stephanie Garcia (9:26.26) and Kenya’s Purity Kauri (9:30.95).

“I really wanted a PB and I got it,” said a delighted Clarke.

“I knew it was going to be a really fast race and I just had to go to the back of the pack, run on my own race and try to pick off some of the girls later in the race.

“I basically did the opposite to what I did in the Europeans, but I’m really glad that I did it.”

And despite finishing14th in a field packed with Rio contenders Clarke, who last month claimed her maiden British women’s 3,000m steeplechase title, was glad to get this type of world class big race experience.

“By far it’s the biggest competition I’ve done especially in the steeplechase,” Clarke added.

“So to get thrown in with the tops in the world is just fantastic and it will have taught me so much.”

Clarke’s next big race will be at ISTAF IAAF World Challenge on September 6 at Berlin’s historic Olympic stadium, where she will looking to lower her 3,000m steeplechase best in a front of a world class field yet again.

She said: “I'd really love to PB again before the end of the year, but we'll see what happens.”