Jack Jacobsen

Mage 8MTBOZ

123 plausible swims · 21 meets · 2024-06-21 → 2026-05-17

Personal records

Event	Course	Best	Date	Meet
25 Freestyle	SCY	22.82	2025-11-23	2025 MT HOT Sugar Beet Splash venue
50 Freestyle	SCY	51.27	2025-10-12	2025 MT HLST Jamie Turner Memorial venue
100 Freestyle	SCY	1:57.44	2025-11-22	2025 MT HOT Sugar Beet Splash venue
25 Backstroke	SCY	22.60	2026-02-27	2026 MT Swimming SC State Championships venue
50 Backstroke	SCY	51.15	2026-03-01	2026 MT Swimming SC State Championships venue
100 Backstroke	SCY	2:22.35	2024-12-14	2024 MT BOZ TEDDY BEAR CLASSIC venue
25 Breaststroke	SCY	25.52	2025-01-01	2025 boz teddy bear complete results
50 Breaststroke	SCY	54.65	2026-02-27	2026 MT Swimming SC State Championships venue
100 Breaststroke	SCY	2:08.99	2025-01-01	2025 boz teddy bear complete results
25 Butterfly	SCY	29.63	2025-12-14	2025 MT BOZ TEDDY BEAR CLASSIC venue
50 Freestyle	LCM	56.11	2026-05-16	2026 MT Bozeman May Classic venue
100 Freestyle	LCM	2:01.13	2026-05-17	2026 MT Bozeman May Classic venue
50 Backstroke	LCM	52.09	2026-05-17	2026 MT Bozeman May Classic venue
100 Backstroke	LCM	1:59.81	2026-05-16	2026 MT Bozeman May Classic venue
50 Breaststroke	LCM	1:02.91	2026-04-18	2026 MT BOZ Spring Chicken venue
100 Breaststroke	LCM	2:17.12	2026-05-16	2026 MT Bozeman May Classic venue

Fastest relay legs

Leg	Course	Time	Start	Relay	Date	Meet
50 Freestyle	LCM	49.10	flying	200 Free Relay (leg 3)	2024-06-21	2024 MT MAC 43rd Annual Firecracker Classic

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

IMX / IMR

IMX 10 & under · LCM

595 points (2/5 events — incomplete)

Event	Time	Points
100 BK LCM	1:59.81	297
100 BR LCM	2:17.12	298
200 FR LCM	—	0
100 FL LCM	—	0
200 IM LCM	—	0

IMR 10 & under · LCM

835 points (3/5 events — incomplete)

Event	Time	Points
100 FR LCM	2:01.13	191
50 BK LCM	52.09	358
50 BR LCM	1:02.91	286
50 FL LCM	—	0
200 IM LCM	—	0

Scored against AAAA motivational base times: ordering is exact, absolute points run ~25% above the official USA Swimming scale.

PR splits

100 Freestyle SCY 1:57.44

55.65

61.79

Front half 55.65s · back half 61.79s

100 Backstroke SCY 2:22.35

67.26

75.09

Front half 67.26s · back half 75.09s

Reaction time

fastest 0.74s average 0.740s slowest 0.74s 1 electronic start

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.

Progression

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

25 Freestyle SCY 22.82 9 swims

50 Freestyle SCY 51.27 5 swims

100 Freestyle SCY 1:57.44 2 swims

25 Backstroke SCY 22.60 12 swims

50 Backstroke SCY 51.15 8 swims

100 Backstroke SCY 2:22.35 2 swims

25 Breaststroke SCY 25.52 11 swims

50 Breaststroke SCY 54.65 9 swims

100 Breaststroke SCY 2:08.99 7 swims

25 Butterfly SCY 29.63 5 swims

50 Freestyle LCM 56.11 10 swims

100 Freestyle LCM 2:01.13 7 swims

50 Backstroke LCM 52.09 9 swims

100 Backstroke LCM 1:59.81 10 swims

50 Breaststroke LCM 1:02.91 9 swims

100 Breaststroke LCM 2:17.12 8 swims