Swimmer profile
Jonas Massie
Male15-16Carson TigersharksPC · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
42.37
37.87
▲ 4.50
34.29
▲ 3.58
31.58
▲ 2.71
29.64
▲ 1.94
26.41
▲ 3.23
100 Free LCM
—
1:23.20
1:13.28
▲ 9.92
1:08.89
▲ 4.39
1:04.29
▲ 4.60
57.34
▲ 6.95
200 Free LCM
—
—
—
2:30.79
2:19.98
▲ 10.81
2:03.54
▲ 16.44
400 Free LCM
—
—
—
5:17.08
4:50.70
▲ 26.38
4:26.60
▲ 24.10
1500 Free LCM
—
—
22:43.70
20:53.76
▲ 109.94
—
—
50 Back LCM
—
42.03
40.46
▲ 1.57
—
—
—
100 Back LCM
1:49.89
1:32.99
▲ 16.90
1:26.88
▲ 6.11
1:20.99
▲ 5.89
—
—
200 Back LCM
—
—
—
2:56.74
—
—
50 Breast LCM
59.34
53.68
▲ 5.66
51.52
▲ 2.16
—
—
—
100 Breast LCM
—
—
1:46.36
—
—
—
50 Fly LCM
—
—
36.72
—
—
27.39
▲ 9.33
100 Fly LCM
—
—
1:25.52
1:17.04
▲ 8.48
1:10.83
▲ 6.21
59.87
▲ 10.96
200 Fly LCM
—
—
—
—
—
2:23.02
200 IM LCM
—
—
3:02.07
2:51.62
▲ 10.45
2:41.26
▲ 10.36
—
400 IM LCM
—
—
—
6:18.20
—
—
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.