Coach's tool
Relay Builder
Pick your club, age group, and event — we'll build the fastest legal mixed-gender lineup from your roster's lifetime PBs at the relay leg distance. Eligibility uses each swimmer's projected age at the 2026 Championships (last age + years elapsed), so kids aging up are correctly included and those aging out are excluded. ISL rule baked in: every lineup must have at least one swimmer of a different gender.
Club
How it works
- 1.We pull every swimmer who's currently rostered for the club at that age bracket (their most-recent ISL Champs swim was for this club).
- 2.For each swimmer, we read their lifetime best at the relay leg distance for each stroke — a 50 Fly PB from 9-10 still carries into the 11-12 relay pool.
- 3.We enumerate every legal 4-swimmer combination and stroke assignment, dropping any that would put four same-gender swimmers on the same relay. The fastest legal lineup wins.
- 4.Each leg also gets a "second choice" — the best alternative if your A-team swimmer is scratched.
Times are each swimmer's lifetime best at the relay leg distance — even when the PB was set in an earlier age bracket. Real meet entries may differ depending on the meet director's seeding policies.