Luka Mijatovic Throws Down 4:10.38 500 Free To Reset Own 15–16 NAG Record

by Sean Griffin 31

November 09th, 2025 Club, News, Records

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

Luka Mijatovic broke his 19th career National Age Group Record and second of the weekend at the 2025 Pleasanton Seahawks SC Senior Meet.

On Sunday morning, the 16-year-old swam 4:10.38 in the prelims of the 500 freestyle, breaking his own 15–16 NAG record of 4:10.96 set at the Pacific Swimming Far Western Championships in April.

Compared to his previous record, Mijatovic did most of the damage on the first 300 yards before fading slightly over the final 200. He opened 0.51 seconds faster through the first 50, then hit the 100 at 0.78 under record pace. He continued to extend that margin, reaching the 150 at 1.05 under, the 200 at 1.56 under, and the 300 at 1.78 under. His April split caught up to him over the final stretch, but he held on to break the mark by 0.58 seconds.

See a full splits comparison between the two record swims below.

Splits Comparison

Mijatovic’s New National Age Group Record Mijatovic’s Former National Age Group Record
50-yards 22.45 22.96
100-yards 24.75 (47.20) 25.02 (47.98)
150-yards 25.30 (1:12.50) 25.57 (1:13.55)
200-yards 25.36 (1:37.86) 25.87 (1:39.42)
250-yards 25.55 (2:03.41) 25.69 (2:05.11)
300-yards 25.42 (2:28.83) 25.50 (2:30.61)
350-yards 25.54 (2:54.37) 25.38 (2:55.99)
400-yards 25.73 (3:20.10) 25.50 (3:21.49)
450-yards 25.66 (3:45.76) 25.36 (3:46.85)
500-yards 24.62 (4:10.38) 24.11 (4:10.96)

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.

Outside of the 500 and 1000, he also holds the 15-16 NAG in the 1650 free (14:37.63) and ranks #2 all-time in the age group in the 400 IM (3:41.76) and #6 in the 200 free (1:33.52).

Mijatovic’s electric weekend follows a breakout performance in the long course pool last summer. At the U.S. Nationals in June, which also served as the World Championship Trials, he delivered the best meet of his career to date.

On day two, in the prelims of the 200 free, Mijatovic put up a time of 1:45.92, advancing him into the ‘A’ final while shattering Maximus Williamson‘s 15-16 NAG record of 1:47.29 and dipping under Michael Phelps‘ 17-18 NAG of 1:45.99 that was on the books since 2003.

After placing 8th in the 200 free final (1:46.39), Mijatovic followed up the next morning with a lifetime best in the heats of the 400 IM, clocking 4:16.18 to rank 4th all-time in the 15-16 age group before placing 5th in the ‘A’ final (4:16.75).

On day four, he made history in the 400 free, breaking his 15-16 NAG record by more than three seconds in the prelims (3:45.89) while also going under Larsen Jensen‘s 17-18 record of 3:46.08 set in 2004. Mijatovic re-broke the record in the final, and, most importantly, landed a spot on the Worlds team by placing 2nd in 3:45.71.

Keeping his foot on the gas, Mijatovic closed out the meet by throwing down a new best time in the 800 free, clocking 7:53.80 to place 4th and rank #2 all-time in the 15-16 age group behind Jensen (7:52.05).

At the 2025 World Championships, results indicate Mijatovic was likely one of the many U.S. swimmers to have been dealing with illness at the meet, having added 14 seconds in the 400 free prelims and placing 36th in 3:59.68.

Beyond Worlds, he 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.

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31 Comments
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Swimfan27
6 months ago

4:08. Unreal

HeGetsItDoneAgain
6 months ago

4:08.5💀💀💀

Last edited 6 months ago by HeGetsItDoneAgain
doe
6 months ago

4:08.57!

doe
Reply to  doe
6 months ago

That would have put him 4th at NCAA’s this season.

Bobthebuilderrocks
6 months ago

4:08.57. good lord

Bigswimguy
Reply to  Bobthebuilderrocks
6 months ago

49.2 coming home, monster

Bobthebuilderrocks
Reply to  Bigswimguy
6 months ago

That’s after going out in 1:37. That should be illegal for a 16 year old. .15 off of Luke’s 17-18 record I think

Random Swimmer
Reply to  Bobthebuilderrocks
6 months ago

That makes him like the 17 fastest performer in history

Bobthebuilderrocks
Reply to  Bobthebuilderrocks
6 months ago

and a 1:43.5 200 fly 20 minutes later. That’s something different

HeGetsItDoneAgain
Reply to  Bobthebuilderrocks
6 months ago

My boi died on the last 50 😭. Crazy double to throw down

Bobthebuilderrocks
Reply to  HeGetsItDoneAgain
6 months ago

I wish I could die and go from 26.9 to 27.3 from the 3rd to 4th 50s haha

lilac
6 months ago

can anyone confirm if hes doing finals or not i dont have meet mobile

Doe
Reply to  lilac
6 months ago

Probably, the meet started at 7:30, no results from anyone up yet

Andre
Reply to  lilac
6 months ago

Oh yeah he sure did, with a casual 4:08.5 !!!

shay
6 months ago

Luka’s incredible coaches has got him to HERE, so far (they need to be recognized MORE). .where do you think Bob’s gonna take him to? Don’t loose your 1500M. Back in my day (70s/80s), it was the club coaches who had the respect and clout. .and those college swim coaches were just lucky sons of b*tches that recruited & got them. The tables have turned. The MONEY is in the universities and the swimmers stopped retiring after graduation. Some acknowledgement of these club coaches (Bob used to be one) is KEY to connecting with age group swimmers to Jr Nationals, to Nats to Worlds to Pro/Worlds/OG. Make the connection–recognize the coaches/teams-athetes. .Big time athletes do zoom calls with multiple team.… Read more »

HeGetsItDoneAgain
Reply to  shay
6 months ago

take your Xanax and go to sleep big dawg

GOATKeown
6 months ago

I’m not great with SCY conversion but how is the 18 year old NAG in the 200 free a 1:45.9? I feel like Phelps was faster than that in LCM at that age.

Bobthebuilderrocks
Reply to  GOATKeown
6 months ago

He didn’t put a whole lot of focus on it until Athens, I feel like and by then he was already 18. In fact, I think his times were kinda slow around 13-15, didnt swim it much

GOATKeown
Reply to  Bobthebuilderrocks
6 months ago

Even so, how many SCY 17-18 NAGs are 3 seconds slower than the LCM WJR? Surely that’s the only one.

Bobthebuilderrocks
Reply to  GOATKeown
6 months ago

I’m not sure what you’re referring to. The part that talks about MP and Williamson’s NAGs is about LCM. Did the article get changed?

Last edited 6 months ago by Bobthebuilderrocks
GOATKeown
Reply to  Bobthebuilderrocks
6 months ago

Yes I misread. I thought that was the SCY NAG and was like “that can’t be possible”. Makes more sense that it’s LCM.

Luke f
Reply to  GOATKeown
6 months ago

200 IM*

HeGetsItDoneAgain
Reply to  GOATKeown
6 months ago

1:45 anything at that time was a ludicrously fast swim. Only people to even get under 1.45 were Thorpe and Hoogenband and Hoogenband did it once if I remember correctly.

Last edited 6 months ago by HeGetsItDoneAgain
MigBike
6 months ago

Good time for a distance event which takes too long. We need more 25 yd races!