SwimBase
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A swimmer powering through a butterfly stroke in a competition lane
Pacing intelligence for swim coaches

See how your team actually swims.

Drop in a meet file. SwimBase reads every split against a world-class ideal, names the pacing pattern, and ranks your roster. Walk onto the deck knowing exactly what to fix.

I'm a swimmer
James Chen
200 Free · NCAA Invite
1:40.12
50
−.06
100
−.15
150
−.09
200
+.30
Held the ideal line through 150, then gave back 0.30s on the close.
Reads every format · scored against the times that define the sport
Hy-Tek/SDIF/ NCAA/USA Swimming/ Olympic/World Aquatics
01 The read

It reads every race the way a coach would.

Each swim is scored against its modeled ideal and named in plain English, then explained: not just what happened, but what it means and what to do about it.

What's happening with James James loses 0.30s on the final 50, in 4 of his last 6 races. The pattern points to endurance, not pacing. Build the close.
James Chen
Negative splitter
200 Free
Sarah Lee
Fast first 100 · falls off pace
200 Fly
Mike Jones
Slow starter
100 Back
Emma Park
Even pacing
500 Free
Maya Chen · 100 Free · A Conference vs B Mid-season
SplitConferenceMid-seasonΔ
5025.926.2−0.3
10028.329.2−0.9
Final54.1855.40−1.22
02 Race comparison

Put any two swims side by side.

Compare a swimmer across meets, or against a teammate, even across distances. The splits line up and the faster swim at each point is marked, so a step forward or a rough back half jumps right out.

03 Roster intelligence

Rank the team by how they race.

Pulled straight from the pacing data on every swim. Click to see who closes a race and who gets off the blocks fastest.

Cut tracking

And every cut, tracked.

The actual standards for any set, and exactly which swimmers already have them.

Men's 50 FreeNCAA DIII A
20.50
BoothKim
Women's 100 FreeNCAA DIII A
52.00
Lawton
Men's 200 IMNCAA DIII B
1:55.40
Graham+2
A swimmer streamlined in their lane, seen from above

A final time tells you who won. The splits tell you why.

Upload once, and every length of every swim becomes a read your team actually understands, before you're off the deck.

Who should swim our 200 free relay?
Your fastest four flat-start 50 frees are Booth (20.3), Kim (20.6), Lawton (21.0) and Roe (21.4), projected 1:23.3. Lead off Booth for the cleanest start. View depth →
Where is Maya losing time in her 100 fly?
Her third 25 is 0.4s off her best split, in every race since January. It's the back-half turn, not the front half. See the breakdown →
04 SwimBase Assistant

A coach who's read every race.

Ask it anything about your team and it answers from your actual splits: relay calls, where a swimmer is leaking time, who's ready for finals, who's near a cut. It shows the numbers, links straight to the proof, and never makes one up. On every page in SwimBase.

From the deck

Coaches are getting their Sundays back.

I used to spend Sunday nights doing splits by hand. Now the pacing patterns are already named when I open it, so I walk into Monday knowing what to fix.

Dana WhitfieldHead Coach, Westlake Aquatics

The split reads are the first thing my swimmers actually read. “Closing slow” lands a lot harder than me saying it for the tenth time.

Marcus PolteriSprint Coach, Carrollton HS

Comparing two swims used to be twenty minutes of math. It’s instant now, and the kids get it without me explaining the chart.

Priya NadkarniAge Group Director, Riverside Y

I upload the meet on the bus ride home and the whole team’s read is waiting before we’re back at the pool.

Tom BeckerHead Coach, Lakeshore Swim Club

It flagged three girls fading on the back half before I’d noticed the pattern myself. We had it fixed in two weeks.

Renee AokiAssistant Coach, Northgate HS

The relay calls alone are worth it. I ask the assistant and it lines up the fastest four with the splits to back it up.

Carlos MendelClub Director, Summit Aquatics

My swimmers check their own pacing now. They show up to practice already knowing what to work on.

Beth CoughlinHead Coach, Pine Valley Swimming
Built for both sides of the deck

One tool, two views.

For coaches
Run the whole team from one upload.
  • Turn a Hy-Tek or SDIF file into a full team read in seconds.
  • See every swimmer's pacing pattern and the time they're leaving on the table.
  • A ranked roster, race comparison, and the assistant for relay calls.
  • Track who already has their cuts, and how close the rest are.
For swimmers
Understand your own racing.
  • Your full race history, best times, and personal bests.
  • Your pacing pattern, split by split, for every race.
  • How close you are to your next cut.
  • Where to find time, without giving away teammates.

Walk onto the deck already knowing.

Create your team in under a minute and upload your first results file.

Free to start · No credit card · Your data stays private to your team