In her last swim of the 2015 World Championships Katie Ledecky became the first woman ever to break 8:10 in the 800m freestyle with a winning time of 8:07.39.

Not only did she break her 8:11.00 world record from 2014, she picked it up, threw it on the ground, and stepped up on it until there was nothing left. With an 8:07.39, Ledecky took an incredible 3.61 seconds off her previous mark. That’s the second largest world-record drop ever in the event behind Tracey Wickman who beat her own world record by 5.91 seconds in 1978.

As if beating her own mark wasn’t enough, Ledecky won the final by over 10-seconds. Second place finisher Lauren Boyle of New Zealand earned the silver with an 8:17.65, which is still an amazing performance in the event if you keep a blind eye to all of Ledecky’s swims.

The time makes her a whopping 6.71 seconds faster than the second fastest performer ever in the event, Rebecca Adlington of Great Britain, and 8.53 seconds faster than the third fastest performer ever, Jazz Carlin.

Ledecky now owns seven of the top 10 fastest performances ever in the women’s 800m freestyle.

Taking the race out strong, Ledecky was a 2:00.22 at the 200-meter mark. At the halfway point she turned in 4:03.22, a time which would have finished third only to herself and Sharon Van Rouwendaal in the individual 400 final. Ledecky split a 4:04.17 on the way home which would rank sixth in the world in the individual 400 free.

With that win, Ledecky earned her fifth gold medal at these world championships. She joins the likes of Missy Franklin, Libby Trickett, and Tracy Caulkins as the only women to have ever achieved the feat.

It also makes Ledecky the first woman to ever win four freestyle gold medals at one single edition of the world championships.

Ledecky took home wins in the 200, 400, and 1500m freestyles earlier in the meet. She also was a member of the winning 4x200m freestyle relay.

Ledecky’s 800 gold is her ninth world championship title of her career. That ranks her second in all time female world championship titles only to Missy Franklin who earned her 10th earlier this meet.

Ledecky’s 8:07.39 marks her third world record of these championships. Earlier in the meet she broke her own 1500m world record twice.