Are these times for all children or just competitive swimmers?

Competitive swimmers only. Every time comes from a swimmer racing at a sanctioned Australian competition, so the median is the middle of the competitive field — already well ahead of the average child of the same age. A 12-year-old anywhere near these medians is doing well.

My 12-year-old is slower than the median. Should I worry?

No. Half of all competitive swimmers are below the median by definition, entry age varies by years, and year-on-year improvement matters far more than any single benchmark. A swimmer who starts behind and improves steadily routinely passes swimmers who were faster at 12. Trajectory beats snapshot.

Australian data · 2022–2026

What is a good 50m breaststroke time for a 12-year-old?

Q: What is a good 50m breaststroke time for a 12-year-old?

Among Australian competitive swimmers, the median 50m breaststroke long course time for 12-year-olds is 42.12 seconds for boys and 43.18 for girls. A swimmer near those times is in the middle of the racing field. Around 36.33 seconds (boys) and 38.01 (girls) reach the top 10% of the age group.

Q: What is a good 50m breaststroke time for a 12-year-old girl?

The median 50m breaststroke long course time for 12-year-old girls in Australian competition is 43.18 seconds. About 40.20 reaches the top 25% of the age group, and roughly 38.01 the top 10%.

Q: What is a good 50m breaststroke time for a 12-year-old boy?

The median 50m breaststroke long course time for 12-year-old boys in Australian competition is 42.12 seconds. About 38.58 reaches the top 25% of the age group, and roughly 36.33 the top 10%.

The median, the top 25% and the top 10% for 12-year-olds — from more than 600,000 Australian race results.

A good 50m breaststroke time for a 12-year-old is about 42.12 seconds for boys and 43.18 for girls — the median of the Australian competitive field. About 38.58 (boys) and 40.20 (girls) reach the top 25% of the age group, and roughly 36.33 seconds (boys) and 38.01 (girls) the top 10%. Every time here comes from a swimmer racing at a sanctioned competition, so the median already sits well ahead of the average child — a 12-year-old near these times is going well.

How age 12 compares

Median 50m breaststroke long course time at ages 11–13
Age	Boys median	Girls median
11	45.15	45.65
12 — this age	42.12	43.18
13	39.18	41.27

For every age from 8 to 16, with top-25% and top-10% columns, see the full average 50m breaststroke time by age table.

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How to read this

Median means half of competitive swimmers that age are faster and half are slower. Top 25% and top 10% mark the sharper end of the field. These are long course (50m pool) times; a short course (25m pool) PB is usually a touch faster. To check whether your swimmer is close to a championship standard, try the qualifying times calculator.

A single time is a snapshot. What matters more is how much a swimmer improves each year — see how much swimmers improve by age.

Related benchmarks

See the 50m breaststroke qualifying times your 12-year-old needs for state and national meets →

Source and method: SwimProgress — best long course time per swimmer, per age (age at race date), for 50m breaststroke, from more than 600,000 publicly available Australian competition results (2022–2026); each cell is based on at least 45 swimmers. Age is the swimmer's age on race day, based on their recorded or estimated birth date. Anonymised and aggregated. Reuse freely with attribution (CC BY 4.0).

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