Swim Time Standards Explained: B to AAAA and Beyond

Written by Candice Darr · Approved by Brett Hawke · Published Sep 1, 2026 · 7 min read

When a 10-year-old drops into the 50 free and touches the wall, the timer on deck may say something like, “That's a BB, nice swim.” The swimmer has no idea what that means, and neither do most of the parents standing behind the blocks.

Swimming has built an entire vocabulary around time standards, and once it clicks, it explains almost everything about how the sport is organized, from local meets all the way up to Junior Nationals.

This guide walks through the motivational standards ladder, how it connects to bigger national meets, and why it's a completely different system from the one your state uses to pick its high school state qualifiers.

What are USA Swimming's motivational time standards

USA Swimming assigns every age group and event a series of six benchmark times, ranked slowest to fastest: B, BB, A, AA, AAA, and AAAA.

According to the official USA Swimming motivational time standards, each tier is set as a fixed percentage of that age group's National Top 16 Reportable Time, meaning the fastest 16 times recorded nationally in that specific age and event.

Here's how the ladder breaks down:

• A B time sits at 68% of the national top-16 time and is usually the first standard a swimmer reaches, marking correct execution of a stroke rather than raw speed.
• A BB time jumps to 75%, described in USA Swimming's own language as a very big step, since it requires a level of speed only a limited share of swimmers reach.
• An A time lands at 84%, and AA climbs to 89%, a standard often required just to enter a trials-and-finals format meet rather than a straight timed final.
• AAA sits at 93%, and AAAA, the top of the ladder, represents 97% of the national top-16 time for that age and event.

Notice how the gaps shrink as the tiers climb. There's a wide 16-point spread between B and A, but only a 5-point gap between A and AA, and the top tiers are separated by just a few percentage points each.

That's intentional. Getting from B to A involves real technical development. Getting from AA to AAAA is a much narrower band, populated by swimmers who are already fast relative to their entire age group nationally.

Why the ladder resets by age and event

An AAAA time in the 11-12 age group is not the same number as an AAAA time in the 15-16 age group. It’s also not the same number in the 100 fly as it is in the 200 breast.

Every age-and-event combination has its own full B-through-AAAA table, recalculated against that specific group's national top-16 performances and published by USA Swimming as a full set each cycle. When people ask for a swimming time standards chart, that per-age, per-event table is what they're really after.

That structure matters for how swimmers and parents should read progress. A 12-year-old aging up into the 13-14 group can hold a AAA time in their old age group and suddenly find themselves back down near a BB time in the new one. That’s purely because the competition pool changed, not because they got slower.

A letter tier dropping after an age-up isn't cause for panic. It's a reset of the ruler, not a step backward in ability.

From motivational standards to national meets

The B-through-AAAA ladder covers age-group swimming, but it isn't the top of the sport's structure. USA Swimming's time standards page lists a separate tier of national meets, each gated by its own qualifying time rather than a motivational letter.

These national meets are the Speedo Sectionals, TYR Futures Championships, Speedo Summer and Winter Junior Championships, the Toyota U.S. Open, and the Toyota National Championships.

These meets sit above the motivational ladder entirely. A swimmer aiming for Sectionals or Futures isn't chasing a AAAA time anymore; they're chasing a specific cut published for that meet, in that year, for that event.

A 15-year-old who has held AAAA times in the 100 and 200 backstroke for two seasons has no faster letter tier to chase, since there isn't one above AAAA. That swimmer’s next real goal is a Sectional or Futures cut, which is its own separate number entirely, and often a serious jump in difficulty even for a swimmer already at the top of the age-group ladder.

How this connects to high school swimming

Here's where a lot of confusion sets in. USA Swimming's motivational standards and your state's high school qualifying times are two completely separate systems. One tells a swimmer where they stand relative to national age-group competition. The other tells a swimmer whether they can advance through their state's district, regional, or sectional meet toward a state championship.

Some states build their own qualifying standard from scratch. South Carolina, for example, has used an approach that calculates an automatic qualifying time from a three-year rolling average of the 20th-place individual finish (10th place for relays) at the state meet, with a separate consideration time set at 1.20 times that automatic standard as a second entry path. Other states, like California, split qualifying spots by section and add a similar automatic-versus-consideration structure.

States that don't publish a fixed number in advance sometimes rely on projections built from recent qualifying history to estimate the coming season's likely cutoff.

None of these state systems reference B, BB, A, AA, AAA, or AAAA at all. A swimmer could hold AAAA times nationally in club swimming and still need to check their own state's specific state-meet standard, since the two ladders were never designed to line up.

For the full breakdown of how qualification actually works state by state, see How State Qualification Works in High School Swimming.

Using time standards to set real goals

The most useful way to treat the motivational ladder isn't as a scoreboard, but as a planning tool. A swimmer sitting at a B time in an event has a clear, well-defined next target: BB. That's a meaningfully different training conversation than just “get faster,” because it points to a specific, sourced number a coach can plan a season around.

Consider a 13-year-old who wants to make a state-qualifying cut next season but currently holds only A times nationally. Comparing the swimmer’s A time against the actual state standard (instead of against AA or AAA on the motivational ladder) is the number that actually determines whether the next-season plan is realistic.

Mixing up the two systems is one of the more common goal-setting mistakes we see from families new to competitive swimming, and it usually comes from assuming every fast time in the sport lives on the same ladder. It doesn't.

Two ladders, two different purposes. A swimmer's events section (covered in Choosing Your Swim Events in High School: A Guide) is the right place to start once both are clear.

Frequently asked questions

What do B, BB, A, AA, AAA, and AAAA mean in swimming?

They're USA Swimming's motivational time standards, a ladder every age group swimmer climbs as they get faster. Each letter tier represents a set percentage of the national top-16 time for that age and event.

What percentage is an AAAA time in swimming?

An AAAA time equals roughly 97% of the National Top 16 Reportable Time for that swimmer's age group and event, making it the fastest tier in the motivational standards ladder. Very few swimmers in any given age group reach it.

Are time standards the same at every swim meet?

No. USA Swimming's motivational standards apply to club and age-group swimming nationally, but high school state associations set their own separate qualifying times that have nothing to do with the B-through-AAAA ladder. A swimmer can hold a AAAA time in club swimming and still need to check their state's specific state-meet standard separately.

What comes after AAAA time standards?

Sectionals, then Futures, then Junior Nationals, each with its own qualifying time that sits above the age-group motivational ladder entirely. These are meets built for swimmers who have already outgrown local competition, not just age-group scoring tiers.

How often do time standards change?

USA Swimming updates its national motivational and championship standards on a multi-year cycle. State high school associations typically recalculate their own qualifying times every year based on recent results. A swimmer who hit AAA times two years ago should confirm the current standard rather than assume last season's number still applies.

Do time standards matter for college recruiting?

They give context, but coaches care more about a swimmer's actual times relative to a specific program's roster than which motivational letter tier those times fall into. A strong AA swimmer can be a great fit for one program and outside the range for another, regardless of the letter attached to the time.

Where to go from here

Time standards work best as a planning tool, not a report card. Know which ladder you're actually looking at – the national motivational tiers, or your state's independent qualifying standard – before setting a season goal around it.

• From here, High School Swimming: A Complete Guide for Parents covers the bigger picture of how a season fits together
• How State Qualification Works in High School Swimming walks through the district-to-state ladder in detail.
• Choosing Your Swim Events in High School: A Guide helps turn a set of times into an actual event lineup.

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