Jack Hatzenbuehler
ID 320235
Born : 1957 Cat. M65 Ultrarunner since 2012 USA
24
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
1
Countries visited ?USAUnited States
35,1%
Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 419; Σ finishers = 1 193. 419 / 1 193 × 100 = 35.12%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed24
Km — ultra races2 008 km
> 100 km6
> 160 km2
> 200 km1
> 24h9
> 48h2
Longest race248,8 km
3rd The Sticks 72 Hour Races — 30/5/2024

Km per year (ultra races)

50
1 race
2022
474
6 races
2023
507
4 races
2024
510
7 races
2025
201
2 races
2026

Race types (share of distance)

Road22,7%
Trail47,5%
Elim.29,7%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0

Records

50 km3h26'23100 km16h24'246 h54,72 km24 h78,41 kmBackyard17 loops

HISTORY

24 race(s)
DateRacePerf.Rk
2026
28.05 72h USA5th The Sticks 72 Hour Races 100.905 km31
28.02 100km USA5th Lake Vian 100km Hilltop Run 27:00:57 h14
2025
29.11 24h USA15th Sunset 24 Hour Endurance Challenge 78.407 km19
15.11 Backyard Ultra USA8th Four Fore Thirty Infinity Backyard Ultra 53.648 km (8h)26
25.10 Backyard Ultra USA1st The Last Cowboy Backyard 100.590 km (15h)12
20.09 50km USA3rd Death by 5k Tulsa 3:26:23 h18
10.05 Backyard Ultra USA1st Lazy A Backyard Ultra 73.766 km (11h)10
12.04 Backyard Ultra USA4th The Eternal Damnation Backyard 53.648 km (8h)35
01.03 100km USA4th Lake Vian 100km Hilltop Run 16:24:24 h5
2024
16.11 Backyard Ultra USA7th Four Fore Thirty Infinity Backyard Ultra 93.884 km (14h)19
19.10 50km USA5th Yippee-Ki-Yay 50 km Race 5:44:02 h22
30.05 72h USA3rd The Sticks 72 Hour Races 248.804 km9
20.04 Backyard Ultra USA3rd The Eternal Damnation Backyard 114.002 km (17h)9
2023
11.11 50km USA4th Thunderbird 50km Trail Run 8:10:43 h31
02.09 36h USA7th The Blood Run at The Good Earth Farm 36 Hour 162.414 km3 🥉
15.04 Backyard Ultra USA2nd The Eternal Damnation Backyard 107.296 km (16h)9
12.03 6h USA16th Six Hour Snake Run 54.717 km4
04.03 50km USA2nd Lake Vian 50km Hilltop Run 6:03:58 h1 🏆
21.01 50km USA12th Go Short, Go Long, Go Very Long 50K 5:35:01 h8
2022
22.01 50km USA11th Go Short, Go Long, Go Very Long 50K 4:50:15 h9
2021
17.07 50km USA29th Full Moon Run - Midnight 50K 6:24:49 h58
2020
17.10 50km USA10th Pumpkin Holler 50 km Race 5:33:07 h26
2014
04.07 51.5mi USA5th Midnight Madness 50 Miler Road Race 10:36:05 h31
2012
06.07 51.5mi USA3rd Midnight Madness 50 Miler Road Race 11:05:40 h34