2025 Pleasanton Seahawks SC Senior Meet
- November 7th-9th, 2025
- Pleasanton, CA
- SCY (25 Yards)
- Full Meet Results: “Pleasanton Seahawks SC Senior 2” on Meet Mobile
During the final session of the Pleasanton Seahawks SC Senior Meet, Luka Mijatovic swam 4:08.57 to obliterate his own 15–16 National Age Group Record in the 500 freestyle, improving on the 4:10.38 he had set just hours earlier in the prelims.
Before today, his best time stood at 4:10.96 from the Pacific Swimming Far Western Championships in April. When he first entered the 15–16 age group, the record stood at 4:15.36, set by Drew Kibler in 2016.
Mijatovic very-nearly ‘jumped’ age groups and broke Luke Hobson‘s 17-18 record of 4:08.42. He will have plenty more chances to improve this time: he doesn’t turn 17 until April 22.
Compared to his prelim swim, Mijatovic built a slight cushion through the first 300 yards before dominating the back half. He was 0.05 seconds faster than record pace on the opening 50, then 0.03 ahead at the 100, 0.12 by the 150, and 0.22 by the 200. At the halfway point, he was 0.32 seconds ahead of his morning pace and continued to widen that margin—0.43 seconds under at 300, 0.48 at 350, 0.81 at 400, and 1.39 at 450.
Mijatovic ultimately closed with a 24.20 final 50 split to finish 1.81 seconds faster than his prelim time.
See a full splits comparison between his three fastest record swims below.
Splits Comparison
| Mijatovic’s New National Age Group Record | Mijatovic’s Former National Age Group Record (From Prelims) | Mijatovic’s National Age Group Record From April | |
| 50-yards | 22.50 | 22.45 | 22.96 |
| 100-yards | 24.67 (47.17) | 24.75 (47.20) | 25.02 (47.98) |
| 150-yards | 25.21 (1:12.38) | 25.30 (1:12.50) | 25.57 (1:13.55) |
| 200-yards | 25.26 (1:37.64) | 25.36 (1:37.86) | 25.87 (1:39.42) |
| 250-yards | 25.45 (2:03.09) | 25.55 (2:03.41) | 25.69 (2:05.11) |
| 300-yards | 25.31 (2:28.40) | 25.42 (2:28.83) | 25.50 (2:30.61) |
| 350-yards | 25.49 (2:53.89) | 25.54 (2:54.37) | 25.38 (2:55.99) |
| 400-yards | 25.40 (3:19.29) | 25.73 (3:20.10) | 25.50 (3:21.49) |
| 450-yards | 25.08 (3:44.37) | 25.66 (3:45.76) | 25.36 (3:46.85) |
| 500-yards | 24.20 (4:08.57) | 24.62 (4:10.38) | 24.11 (4:10.96) |
Mijatovic now ranks as the 17th-fastest performer in the history of the event. See the full list below.
All-Time Top Performers:
- Leon Marchand– 4:02.31 (2024 NCAA Championships)
- Rex Maurer– 4:04.45 (2024 Texas Invite)
- Carson Foster– 4:05.81 (2024 Texas Invite)
- Kieran Smith– 4:06.32 (2020 SEC Championships)
- Luke Hobson– 4:06.34 (2025 NCAA Championships)
- Matthew Sates– 4:06.61 (2022 NCAA Championships)
- Jake Magahey– 4:06.71 (2021 SEC Championships)
- Lucas Henveaux– 4:06.74 (2025 NCAA Championships)
- Zane Grothe– 4:07.25 (2017 Winter Nationals)
- Noah Millard– 4:07.68 (2025 Ivy League Championships)
- Townley Haas– 4:08.19 (2019 NCAA Championships)
- Tomas Koski– 4:08.25 (2025 SEC Championships)
- Drew Kibler– 4:08.26 (2020 Texas First Chance Invitational)
- Clark Smith– 4:08.42 (2017 NCAA Championships)
- Peter Vanderkaay– 4:08.54 (2008 Michigan Open)
- Jovan Lekic– 4:08.55 (2025 NCAA Championships)
- Luka Mijatovic– 4:08.57 (2025 Pleasanton Seahawks SC Senior Meet)*
For comparison’s sake, Mijatovic’s time would have placed him fifth after prelims at last year’s Division I NCAA Championships and into the championship final, where his time would have ranked fourth.
Earlier in the meet, the Texas commit smashed the 15-16 NAG in the 1000 free with a time of 8:37.01, won the 200 IM in a best time of 1:44.28, and took the 200 free in his second-fastest time ever, 1:33.74.
The 16-year-old Pleasanton Seahawk has been a National Age Group record-breaking machine over the past five years, having now set a total of 20 NAG records. This past summer, he also made his debut on the senior international stage, qualifying for the U.S. roster at the 2025 World Championships.
In June, Mijatovic was the runner-up in the 400 free at the 2025 U.S. National Championships in a time of 3:45.71, re-lowering the boys’ 15-16 NAG record he reset in the prelims (3:45.89) to earn a berth on the Worlds team. Both swims were also under the current 17-18 NAG record, which had been on the books since 2004, from Larsen Jensen (3:46.08) until Ryan Erisman (3:46.01) broke it in the final at Nationals.
Two days prior to that swim, Mijatovic did the same thing in the 200 free, clocking 1:45.92 to break the 15-16 NAG record of 1:47.29 held by Maximus Williamson while also going under the 17-18 record held by none other than Michael Phelps (1:45.99).
At the 2025 World Championships, Mijatovic was one of the many U.S. swimmers who dealt with illness at the meet, adding 14 seconds in the 400 free prelims and placing 36th in 3:59.68.
He also represented the U.S. on the international stage at the 2024 Junior Pan Pacific Championships, when, despite being just 15, he won gold in the 200 free, 400 free and 4×200 free relay.
Call’n it now. 4:02 in December.
Luka will need a little more speed in the 100 to break four minutes in the 500. His 44.8 isn’t quite enough—but just barely. A one-second improvement would do it, especially since he’s being coached across the full energy spectrum. Great talent, great coach, great environment. Someone should’ve been under four long ago.
If Hafnaoui had stayed at Indiana when Marchand went 4:02, they both likely would’ve broken four. I was fortunate to help Mark Schubert when we had Hafnaoui at The Swim Team, but he’d already dropped about 4% in the mile that season at Indiana before skipping classes and losing training consistency before Paris. I’ve never seen anyone more capable of exploding forward mid-race when he chose to.… Read more »
he goes 43.6 in the 100
Any video of this swim???
There’s a video of his last 350. Luka has it, SwimSwam can ask him for it.
I almost feel like 4:02 is a cap in this event. Leon swam 60 percent of the race underwater so that only leaves like 40 percent of the race that is not underwater to improve speed. Just seems unlikely to me that anyone will take that down much to say sub 4min. They would realistically need to have superior underwaters to Leon to do so.
Leon is like a 3:48 LC 400. Just because he swam it underwater (and died because of it), doesn’t mean a guy who can actually swim freestyle at a generational level can’t go out 1:34.0 and hold 24 mid with a 23 low last 50.
Look at Sates’ 500 splits. He was 23+ on the 3 last 50s. I’d think a guy with better freestyle than him can figure out a way to make it more like 5 or 6 of the last 50s.
There’s definitely still room in this event. Now, 200 IM scy, thats a different story. Not sure that one goes for a long long time.
Sates 2022 NCAA 500fr is probably my favorite 500 of all time. Him attacking the last 200 and insane kick was just wild. He was really peaking back then
Sates also miscounted that 500 and lamented that he didn’t pick up his tempo at least 50y earlier.
Leon isnt a great freestyler relative to his actual strengths. This becomes blatantly obvious when he swims 400 LCM. Luka would put 2 or so body lengths on him any day of the week.
Leon’s 500 was INCREDIBLY inefficient–he took 10 strokes per 25 WITH 6 dolphin kicks. I wouldn’t be surprise if Maurer smashes the record soon. The future of the 500 lies in an efficiency based model (less stroke rate) the people who will win in the next couple of years are the ones who accelerate through power and distance per stroke, not stroke rate. (think Pan, think Popovichi)
In Luka we trust. There is no doubt he is the real deal.
Bro is the wemby of swimming
Did he do the 200 on Saturday?
His last 250 was faster than Leon’s last 250 when he went 4:02. Bodes well for a sub 4:00 once he improves his underwaters.
Leon was tiring over the last portions since he was out in 2:57+.
He built a lead of OVER 5 SECONDS over Luka at the 250.
He was also FIVE years older.