swimstats

Mark Jacobi-Krohn

Mage 20CZMNMTSTAQJT

69 plausible swims · 11 meets · 2024-05-16 → 2026-07-26

Personal records

EventCourseBest CutDateMeet
200 Backstroke SCY 1:59.41 Sectionals ✓+12.92s to Futures 2026-06-20 2026 MN AQJT Junevenue
400 Individual Medley SCY 4:12.77 Sectionals ✓+20.08s to Futures 2026-06-20 2026 MN AQJT Junevenue
100 Freestyle LCM 56.10 Sectionals ✓+4.11s to Futures 2024-06-02 2024 MN GREAT WOLF HUFF N PUFF INVITEvenue
200 Freestyle LCM 1:59.55 Sectionals ✓+5.46s to Futures 2024-05-31 2024 MN GREAT WOLF HUFF N PUFF INVITEvenue
400 Freestyle LCM 4:09.16 Sectionals ✓+6.97s to Futures 2024-05-16 2024 ST TXLA Longhorn Aquatics Elite Invitevenue
100 Backstroke LCM 1:00.69 Sectionals ✓+2.50s to Futures 2025-08-02 2025 ND DRGN MN Senior LC State Championshipvenue
200 Backstroke LCM 2:09.19 Sectionals ✓+2.20s to Futures 2024-05-17 2024 ST TXLA Longhorn Aquatics Elite Invitevenue
200 Breaststroke LCM 2:38.41 Sectionals ✓+16.02s to Futures 2025-06-29 2025 MN AQJT Aquajets Summer Spectacularvenue
200 Individual Medley LCM 2:11.09 Sectionals ✓+3.10s to Futures 2024-05-18 2024 ST TXLA Longhorn Aquatics Elite Invitevenue
400 Individual Medley LCM 4:35.56 Sectionals ✓+2.47s to Futures 2024-07-25 2024 USAS Futures Championships-Minneapolisvenue

National cuts (Sectionals → Nationals) are the current-season meet qualifying times for the swimmer's zone and age group; ✓ marks the hardest cut already achieved.

Fastest relay legs

LegCourseTime StartRelayDateMeet
200 Freestyle LCM 1:58.77 flying 800 Free Relay (leg 2) 2026-07-23 2026 MN STRM Senior LC State Championship
100 Butterfly LCM 59.26 flying 400 Medley Relay (leg 3) 2026-07-25 2026 MN STRM Senior LC State Championship

Reconstructed from relay split marks. Flat = lead-off (comparable to individual times); flying starts run ~0.5–0.7s fast and are not PRs.

PR splits

200 Backstroke SCY 1:59.41

27.22
30.42
31.28
30.49

Front half 57.64s · back half 61.77s

400 Individual Medley SCY 4:12.77

18.04
32.95
31.52
35.97
36.95
29.77
28.83
38.74

Front half 118.48s · back half 134.29s

100 Freestyle LCM 56.10

26.98
29.12

Front half 26.98s · back half 29.12s

200 Freestyle LCM 1:59.55

27.67
30.34
31.11
30.43

Front half 58.01s · back half 61.54s

400 Freestyle LCM 4:09.16

27.70
31.06
31.75
32.02
31.29
32.16
32.08
31.10

Front half 122.53s · back half 126.63s

100 Backstroke LCM 1:00.69

29.24
31.45

Front half 29.24s · back half 31.45s

200 Backstroke LCM 2:09.19

29.90
32.58
33.68
33.03

Front half 62.48s · back half 66.71s

200 Breaststroke LCM 2:38.41

35.43
40.80
41.64
40.54

Front half 76.23s · back half 82.18s

200 Individual Medley LCM 2:11.09

27.92
33.68
38.56
30.93

Front half 61.60s · back half 69.49s

400 Individual Medley LCM 4:35.56

29.37
34.18
35.66
34.96
39.55
39.95
31.31
30.58

Front half 134.17s · back half 141.39s

Reaction time

fastest 0.60s average 0.613s slowest 0.62s 3 electronic starts

Start reaction over time faster starts higher

From electronically-timed starts only (~2% of corpus swims carry a reaction time). PRs with a recorded reaction show an RT chip in the splits section above.

Swim history

Every recorded swim, newest first
DateEventCourse TimeAge RoundMeet

Individual swims with a recorded date and time — including disqualifications — plus reconstructed relay legs (marked). Assembled in the browser from this page’s data.

Progression

Faster times are higher. One card per event, all courses & history.

200 Backstroke SCY 1:59.41 1 swim
400 Individual Medley SCY 4:12.77 1 swim
100 Freestyle LCM 56.10 1 swim
200 Freestyle LCM 1:59.55 5 swims
400 Freestyle LCM 4:09.16 12 swims
100 Backstroke LCM 1:00.69 10 swims
200 Backstroke LCM 2:09.19 12 swims
200 Breaststroke LCM 2:38.41 2 swims
200 Individual Medley LCM 2:11.09 13 swims
400 Individual Medley LCM 4:35.56 12 swims