- That record is Clark Smith's 1000 Free (8:33.93) from December 6th of 2015. This event, however, is not individually swum at NCAAs.

- The oldest NCAA-event record is Ryan Murphy's 200 Back (1:35.73) from March 26, 2016, which has survived for days.

- On the same day during the 2023 NCAA Championships, NC State broke the 200 Medley relay record (1:20.67) and Texas broke the 800 Free relay record (6:03.42).

- Leon Marchand of France has the 200 IM record in 1:36.34.

- Leon Marchand also has the 400 IM record in 3:28.82.

- Bjorn Seeliger of Sweden led off Cal-Berkeley's 200 Medley Relay with a 50 Back record time of 20.08.

- Florida's 200 Free Relay record of 1:13.35 included Josh Liendo of Canada and Eric Friese of Germany.

- NC State's 200 Medley Relay record of 1:20.67 included Kacper Stokowski of Poland and Kyls Korstanje of the Netherlands.

- Florida's 400 Medley Relay record of 2:58.32 included Josh Liendo of Canada.

- As mentioned earlier, Bjorn Seeliger of Sweden has the 50 Back record at 20.08.

- Leon Marchand of France has the fastest 50 Breast split at a 22.27.

- Jordan Crooks of the Cayman Islands split 18.90 in the 50 Fly, being the first man under 19 seconds.

-- In fact, the 4 fastest 50 Fly splits were all set by non-Americans. Jordan Crooks (18.90), Eric Friese of Germany (19.36), Joseph Schooling of Singapore (19.36), and Andrei Minakov of Russia (19.42).

- Leon Marchand of France split 49.23 in the 100 Breast.

- Josh Liendo of Singapore split 42.91 in the 100 Fly, being the first man under 43 from a relay start.

- Leon Marchand of France split 1:28.42 in the 200 Free, being the first man under 1:29.00.

- Clark Smith's 1000 Free time of 8:33.93 was set at a Texas Invitational in 2015, and he swam the race completely alone. The 1000 Free is usually only swam at meets outside of midseason/conference/NCAAs, so this record may remain untouched for a long time. It was almost broken by Bobby Finke in his 1650 Free at the 2020 SECs. Finke took out the first 1000 of his 1650 in 8:34.63, only .70 off Smith's record.

- Shaine Casas's 100 IM time of 46.33 was set at an intrasquad meet in December of 2020. This event is rarely swam at midseason meets and has never been swum at the NCAAs, but it's one of the most exciting races in all of swimming.

- That record is Missy Franklin's 200 Free (1:39.10) from March 21, 2015. Only one person has ever come within a second of this record: Mallory Comerford's 1:39.80 in 2018. No one else has ever been under 1:40.10.

- That record is Stanford's 800 Free Relay (6:45.91) from March 15, 2017. Only 1 team besides Stanford has been under 6:50.00, and that was UVA's 6:49.82 from 2023.

- Katie Ledecky swam the 1000 Free in 8:59.65 at a Nation's Capital Invitational in 2015, before she ever swam in college. This record is considered to be one of the fastest of the women's records, and when it was broken, it set the new record by over 10 seconds. Kyle Sockwell, the President of Swimming Twitter, pointed out that for this race, Ledecky went "Out 4:30 back 4:28... lol."

- Regan Smith's 200 Back time of 1:47.16 was set at a Speedo Champions Series meet in Greensboro, before she swam in college. At this meet, Smith represented Minnesota's Riptide Club Swim Team.

- Most recently, Katie Ledecky swam the 1650 Free at the Florida Senior State Champs, breaking the US Open and American record with a 15:01.41. Representing the Gator Swim Club, Ledecky's 1000 split was the 2nd fastest 1000 Free in history.

- Maggie Mac Neil of Canada holds the 50 Free record at a 20.79.

- Maggie Mac Neil also has the 50 Back record at a 22.52 when she led off LSU's 200 Medley Relay at the 2023 ACC Championships.

- The University of Virginia's 400 Medley Relay US Open/NCAA record included Aimee Canny from South Africa on the Freestyle leg.

- Once again, Maggie Mac Neil of Canada holds the 50 Back record at a 22.52 leading off for LSU.

- Maggie Mac Neil also has the fastest 50 Fly split in history at a 21.85 at the Art Adamson Invitational in 2022.

- Maggie Mac Neil ALSO has the fastest 100 Free split in history at a 45.26. Both the 50 Back and 100 Free were done at the same meet, the 2023 ACC Championships.

- Anna Hopkin of Great Britain has the fastest 50 Free relay split in history at a 20.27, however this record is debated. Here's what was said on Swimswam the day of the split: "In spite of Hopkin recording a -.05 reaction time, meet officials declared an equipment malfunction when video review showed it clearly that Arkansas’ leadoff leg Kobie Melton touched the pad while Hopkin’s toe was still on the block. It is within the bounds of NCAA rules to overturn the touchpads when officials can confirm a clear equipment malfunction. The video was reviewed by equipment manufacturer Omega, the meet referee, and an SEC admin. A video appears as though the leadoff leg, Kobie Melton, almost took an extra stroke, but on a bit of a weird finish probably registered a soft touch. So, the swim was legal, but that means that the split was probably not quite as fast as 20.27. It was still probably the fastest, or very close to the fastest, swim, as the error in the touchpad didn’t appear to be .18 seconds."

- As mentioned earlier, Katie Ledecky's 1000 Free time of 8:59.65 was swum outside of the NCAAs.

- Also mentioned earlier, Regan Smith's 200 Back time of 1:47.16 was swum outside of the NCAAs.

- Gretchen Walsh has the 100 IM record from a duel meet against Texas in November of 2022. This event, according to a video of the race, was swum unsuited, which is absolutely mindblowing.

- Also mentioned earlier, Katie Ledecky's 1650 Free record was set at the 2023 Florida Senior State Champs.