Sam Short Unloads 3:40.67 400 Free Personal Best For #1 In World Rankings

by Will Baxley 2

June 08th, 2026 Australia, International, News

2026 AUSTRALIAN SWIMMING TRIALS

Leave it to Sam Short to give Aussie trials a dynamite start. In the meet’s first event, the men’s 400 freestyle, he gave the World and national records a proper scare with a 3:40.67, marked by an aggressive front half. 

Though he missed the aforementioned records, it still marked one of the best swims of the 22-year-old’s career and one of the strongest performances in any event anywhere in the world this year. The time checks in as Short’s lifetime best — .01 under the 3:40.68 he delivered to take the 2023 World Title. It also keeps him as the #5 all-time performer and just outside the top 10 all-time performances at #11.

All-Time Performers, Men’s LCM 400 free:

  1. Lukas Märtens (GER) — 3:39.96, 2025
  2. Paul Biedermann (GER) — 3:40.07, 2009
  3. Ian Thorpe (AUS) — 3:40.08, 2002
  4. Sun Yang (CHN) — 3:40.14, 2012
  5. Sam Short (AUS) — 3:40.67, 2026

Domestically, it stands as the #2 Australian performance all-time, trailing only Ian Thorpe’s legendary 3:40.08 from nearly a quarter-century ago.

With Commonwealth Games and Pan Pacs privileges secured, Short takes the pole position in the season’s world rankings. He leapfrogs over previous #2 Märtens (3:41.76) and former #1 Zhang Zhanshuo of China (3:41.55) to lead the globe by nearly a second. Short previously had the #3 spot at 3:42.53 from the Australian Open.

2025-2026 LCM Men 400 FREE

SamuelAUS
SHORT
06/08
3:40.67
2Zhang
Zhanshuo
CHN3:41.5503/21
3Lukas
Märtens
GER3:41.7604/23
4Oliver
Klemet
GER3:43.1404/09
5Ryan
ERISMAN
USA3:44.0305/24
View Top 26»
 

To bring home Short’s aggressive first half, compare his splits this evening to his previous pb as well as Märtens. It was under Märtens’ world record pace from the 150 to the 350. That swim in its own right was already known for an aggressive first 200.

Sam Short, 2023 Worlds Sam Short, 2026 Aussie Trials Lukas Märtens, 2025 Stockholm Open
50 25.91  25.22 24.75 
100 53.58 (27.67) 52.28 (27.06) 51.90 (27.15)
150 1:21.33 (27.75) 1:19.47 (27.19) 1:19.65 (27.75)
200 1:49.29 (27.96) 1:47.33 (27.86) 1:47.55 (27.90)
250 2:17.46 (28.17) 2:15.22 (27.89) 2:15.83 (28.28)
300 2:45.49 (28.03) 2:43.69 (28.47) 2:44.01 (28.18)
350 3:13.67 (28.18) 3:12.38 (28.69) 3:12.39 (28.38)
400 3:40.68 (27.01) 3:40.67 (28.29) 3:39.96 (27.57)

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Andre
1 hour ago

Short breaks this WR at Comm Games, then Maertens breaks it at Europeans, and then Zhang Zhanshuo breaks it at Asian Games

PFA
1 hour ago

Maybe it’s that his front speed is there now but he might break his 800 free Australian record this week. Hacketts 1500 record should be safe for now.