The book
League records
Best-ever observed time per event across all loaded seasons. 10 events with at least one recorded swim matching your filter.
How records work here
Each entry is the fastest legal time ever recorded for that event in the loaded data — across every ISL Championship PDF we've parsed. Records carrying multiple seasons of daylight get a Standing chip; records set this season get New. ISL is the ultimate authority on the official book — we display what the published results show.
Records in book
10
matching your filter
Oldest standing
14y
Sydney Okubo, 2012
Age 11-12
| Event | Holder | Time | Margin | Set |
|---|---|---|---|---|
| Girls 11-12 100 IM | Anna HeumannDF | 1:00.08 | +2.90s | |
| Girls 11-12 50 Backstroke | Sydney OkuboWB | 28.70 | +0.16s | |
| Girls 11-12 50 Breaststroke | Anna HeumannDF | 31.00 | +0.86s | |
| Girls 11-12 50 Butterfly | Erin LiDF | 26.45 | +1.09s | |
| Girls 11-12 50 Freestyle | Ariel LinQH | 25.08 | +0.38s | |
| Boys 11-12 100 IM | Sahiel PaiNIK | 56.10 | +0.79s | |
| Boys 11-12 50 Backstroke | Nathan WuSI | 26.37 | +0.75s | |
| Boys 11-12 50 Breaststroke | Sahiel PaiNIK | 27.44 | +1.85s | |
| Boys 11-12 50 Butterfly | Sahiel PaiNIK | 25.20 | +0.52s | |
| Boys 11-12 50 Freestyle | Jacob WangDF | 23.32 | +0.41s |
4 records set or matched in the most recent season.