Swimmer profile
Sierra Koontz
Female17-18Memphis Thunder Aquatic ClubSE · SOUTHERN
SeasonUSA Swimming season runs Sept – Aug
Event
2018–19
2020–21
2021–22
2023–24
2024–25
2025–26
50 Free LCM
45.82
—
33.63
▲ 12.19
30.47
▲ 3.16
30.42
▲ 0.05
—
100 Free LCM
—
—
—
—
1:05.45
1:02.52
▲ 2.93
200 Free LCM
—
2:57.63
—
—
2:24.06
▲ 33.57
2:15.48
▲ 8.58
400 Free LCM
—
—
—
—
—
4:43.54
50 Back LCM
52.11
—
—
—
—
—
50 Breast LCM
1:02.73
—
—
—
—
—
100 Breast LCM
—
1:52.65
—
—
—
—
50 Fly LCM
—
40.79
—
—
—
31.00
▲ 9.79
100 Fly LCM
—
—
1:30.04
1:19.03
▲ 11.01
1:14.42
▲ 4.61
1:10.07
▲ 4.35
200 IM LCM
4:14.06
—
3:13.38
▲ 60.68
—
—
—
Improvement<0.5s0.5–2s2–5s5s+Slower
📊 All Attempts by Event
Chronological history of every recorded swim. Click an event to expand its attempt list.