Swimmer profile
Sierra Mercer
Female17-18Rose Bowl AquaticsSCS · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2022–23
2023–24
2024–25
2025–26
50 Free LCM
34.86
31.99
▲ 2.87
31.98
▲ 0.01
31.72
▲ 0.26
100 Free LCM
1:16.01
1:10.49
▲ 5.52
1:10.06
▲ 0.43
—
200 Free LCM
2:44.21
2:35.33
▲ 8.88
2:28.31
▲ 7.02
—
400 Free LCM
6:13.73
5:38.74
▲ 34.99
5:13.20
▲ 25.54
—
800 Free LCM
—
—
10:37.27
—
1500 Free LCM
—
22:46.12
20:48.25
▲ 117.87
—
50 Back LCM
—
—
—
41.60
100 Back LCM
1:40.08
—
—
1:27.96
▲ 12.12
100 Breast LCM
1:50.67
—
—
—
50 Fly LCM
47.19
40.76
▲ 6.43
39.34
▲ 1.42
—
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.