Swimmer profile
Mark Heffern
Male17-18Mesa Aquatics ClubAZ · WESTERN
SeasonUSA Swimming season runs Sept – Aug
Event
2015–16
2016–17
2017–18
2018–19
2020–21
2021–22
2022–23
2023–24
2024–25
2025–26
50 Free LCM
39.74
37.11
▲ 2.63
35.25
▲ 1.86
33.62
▲ 1.63
27.33
▲ 6.29
25.62
▲ 1.71
25.40
▲ 0.22
25.50
▼ 0.10
25.17
▲ 0.33
24.06
▲ 1.11
100 Free LCM
1:31.39
1:24.69
▲ 6.70
1:20.99
▲ 3.70
1:15.58
▲ 5.41
59.43
▲ 16.15
56.29
▲ 3.14
55.83
▲ 0.46
54.54
▲ 1.29
52.89
▲ 1.65
53.96
▼ 1.07
200 Free LCM
—
3:04.67
2:56.99
▲ 7.68
—
2:15.07
▲ 41.92
2:05.40
▲ 9.67
2:04.42
▲ 0.98
1:58.64
▲ 5.78
1:58.12
▲ 0.52
2:00.97
▼ 2.85
400 Free LCM
—
—
—
5:59.69
4:58.15
▲ 61.54
4:30.54
▲ 27.61
4:23.88
▲ 6.66
4:19.03
▲ 4.85
4:19.48
▼ 0.45
—
800 Free LCM
—
—
—
—
10:14.37
—
9:45.55
▲ 28.82
9:27.23
▲ 18.32
9:58.00
▼ 30.77
—
1500 Free LCM
—
—
—
—
—
18:43.55
18:47.47
▼ 3.92
17:47.87
▲ 59.60
18:49.54
▼ 61.67
—
50 Back LCM
47.16
43.52
▲ 3.64
38.79
▲ 4.73
38.78
▲ 0.01
—
—
29.20
▲ 9.58
28.96
▲ 0.24
—
29.42
▼ 0.46
100 Back LCM
1:41.60
1:36.55
▲ 5.05
1:30.70
▲ 5.85
1:24.94
▲ 5.76
1:07.19
▲ 17.75
—
1:03.85
▲ 3.34
1:02.26
▲ 1.59
1:05.86
▼ 3.60
1:05.37
▲ 0.49
200 Back LCM
—
—
—
3:04.10
2:31.51
▲ 32.59
2:37.25
▼ 5.74
2:28.79
▲ 8.46
—
2:16.35
▲ 12.44
—
50 Breast LCM
54.84
53.31
▲ 1.53
48.24
▲ 5.07
—
—
33.08
▲ 15.16
—
—
—
32.93
▲ 0.15
100 Breast LCM
2:01.74
1:54.42
▲ 7.32
1:48.00
▲ 6.42
1:42.60
▲ 5.40
1:19.59
▲ 23.01
1:11.94
▲ 7.65
1:13.86
▼ 1.92
1:14.09
▼ 0.23
—
—
200 Breast LCM
—
—
—
3:46.24
2:57.11
▲ 49.13
2:51.59
▲ 5.52
2:44.19
▲ 7.40
—
—
2:36.76
▲ 7.43
50 Fly LCM
53.39
42.78
▲ 10.61
41.68
▲ 1.10
—
—
—
—
27.29
▲ 14.39
25.76
▲ 1.53
26.36
▼ 0.60
100 Fly LCM
1:57.01
1:46.39
▲ 10.62
1:47.09
▼ 0.70
—
1:07.26
▲ 39.83
59.47
▲ 7.79
58.76
▲ 0.71
56.60
▲ 2.16
56.06
▲ 0.54
57.13
▼ 1.07
200 Fly LCM
—
—
—
—
2:38.35
2:40.07
▼ 1.72
2:35.85
▲ 4.22
2:06.29
▲ 29.56
2:05.22
▲ 1.07
2:17.04
▼ 11.82
200 IM LCM
—
—
—
—
2:32.15
2:13.84
▲ 18.31
2:14.72
▼ 0.88
2:10.57
▲ 4.15
2:07.36
▲ 3.21
2:12.03
▼ 4.67
400 IM LCM
—
—
—
—
5:29.32
5:23.86
▲ 5.46
4:52.47
▲ 31.39
4:50.56
▲ 1.91
4:42.21
▲ 8.35
5:01.59
▼ 19.38
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.