Zachary Szablewski
ID 338816
Born : 1989 Cat. M35 Ultrarunner since 2012 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
57
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
2
Countries visited ?CANCanadaUSAUnited States
6,3%
Rank quotient ?This runner's calculation uses 67 eligible race(s): Σ(rank − 1) = 450; Σ finishers = 7 174. 450 / 7 174 × 100 = 6.27%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed67
Km — ultra races5 826 km
> 100 km15
> 160 km14
> 200 km1
> 24h3
Longest race211,7 km
7th Fat Ox 24 Hour National Championship — 22/11/2025

Km per year (ultra races)

482
6 races
2022
245
4 races
2023
693
7 races
2024
659
7 races
2025
372
3 races
2026

Race types (share of distance)

Road12,3%
Trail83,6%
Elim.4,1%

Wins & podiums (ultra)

🏆 Win20
🏆 Win M22
🏅 Top 344
🏅 Top 3 M45
Longest winning streak3
Current streak0

Records

50 km3h16'31100 km7h37'0450 mi6h24'39100 mi18h22'2012 h123,60 km24 h211,68 km

HISTORY

67 race(s) · 4 split(s) nested
DateRacePerf.Rk
2026
11.07 100mi USA6th Devil's Gulch 100 Mile Race 24:48:16 h3 🥉
27.02 100mi USA10th Orcas Island 100 Mile Race 22:03:21 h4
31.01 50km USA1st Winter Deception Pass 4:01:49 h1 🏆
2025
22.11 24h USA7th Fat Ox 24 Hour National Championship 211.677 km2 🥈
26.07 50mi USA33rd White River 50 Mile Endurance Run 8:16:27 h2 🥈
31.05 100mi USA36th Mohican Trail 100 Mile 18:22:20 h4
04.05 50km USA41st Mt. Si 50 km Ultra Run 3:16:31 h1 🏆
12.04 50km USA15th Yakima Skyline Rim 50k 5:23:49 h2 🥈
15.03 35mi USA26th Santa Barbara Nine Trails 35 Mile Endurance Run 6:21:52 h9
15.02 50km USA7th Run Forest Run 50k Race 4:31:51 h1 🏆
2024
14.12 24h USA15th Desert Solstice 24 Hour Run 96.000 km20
09.11 50km USA3rd Willapa Trail Festival 50km Race 3:19:32 h1 🏆
09.08 120mi CAN15th Fat Dog 120 Mile Trail Race 32:12:26 h4
13.07 50mi USA4th Devil's Gulch 50 Mile Race 12:02:04 h2 🥈
20.04 100km USA18th Mad City 100K Road Race 7:37:04 h8
30.03 12h USA14th Dizzy Daze 12 Hour Race 123.597 km1 🏆
17.02 50km USA6th Run Forest Run 50k Race 4:27:13 h2 🥈
2023
08.07 50km USA9th Kill Bill's Oyster Dome Challenge 4:40:38 h1 🏆
27.05 8h USA2nd Squak In The Dark 64.051 km2 🥈
13.05 50mi USA15th Sun Mountain 50 Mile Trail Races 8:39:55 h2 🥈
18.02 50km USA5th Run Forest Run 50k Race 4:38:46 h3 🥉
2022
01.10 50km USA2nd Spartan Trail - San Jose Trail Challenge 5:04:47 h1 🏆
17.09 100mi USA5th Teanaway Country 100 Race 28:02:00 h2 🥈
09.07 50mi USA1st Sawtooth Ridge 50Miles 13:01:18 h3 🥉
18.06 7h USA4th Gulch Countdown - Last Man Standing 59.706 km2 🥈
14.05 50mi USA14th Peak Ultra 50 Mile Endurance Run 10:23:11 h1 🏆
22.01 50km USA18th Capitol Peak MegaFatAss 4:02:52 h1 🏆
2021
28.08 100mi USA23rd Cascade Crest Classic 100 Mile 22:22:40 h3 🥉
24.07 50km USA6th Needles 50k 6:20:00 h3 🥉
19.06 7h USA3rd Gulch Countdown - Last Man Standing 63.102 km1 🏆
05.06 50km USA12th Vashon Ultramarathon 50k 3:53:45 h3 🥉
26.03 50mi USA11th Badger Mountain 50 Mile Challenge 7:07:33 h2 🥈
2020
04.01 56km USA2nd Gulch Countdown - Last Man Standing 6:37:00 h2 🥈
2019
14.12 24h USA10th Desert Solstice 24 Hour Run 185.653 km6
16.11 50km USA10th Grand Ridge 50 km Trail Run 4:42:55 h1 🏆
18.05 50km USA6th Smith Rock Ascent 50K 4:05:38 h5
05.01 60km USA1st Gulch Countdown - Last Man Standing 6:55:00 h1 🏆
2018
17.11 50km USA9th Grand Ridge 50 km Trail Run 4:33:55 h2 🥈
14.09 100mi USA12th Run Rabbit Run 100 Mile UltraMarathon - Hares Run 27:58:54 h35
14.04 50mi USA10th Lake Sonoma 50 Mile Race 7:55:53 h28
17.02 100km USA5th Black Canyon Trail 100 km Run 10:15:09 h16
2017
29.10 50km USA7th Cougar Mountain Trail Run 4:29:50 h1 🏆
03.09 50km USA5th The Rut Mountain Runs 7:10:37 h35
05.08 50mi USA25th White River 50 Mile Trail Run 7:14:18 h3 🥉
24.06 100mi USA44th Western States 100 Mile Endurance Run 19:55:14 h19
20.05 50km USA2nd Tiger Mountain Trail Run 4:43:42 h2 🥈
15.04 50mi USA9th Lake Sonoma 50 Mile Race 6:53:14 h4
18.03 50km USA25th Chuckanut 50K 4:15:13 h20
05.02 50km USA3rd West Seattle Beach Run - Winter Edition 3:28:40 h1 🏆
14.01 50km USA22nd Bridle Trails Winter Running Festival 3:22:30 h1 🏆
2016
19.11 50km USA8th Bills' Badass 50K 4:28:09 h1 🏆
17.09 100mi USA5th Idaho Mountain Trail Ultra Festival (IMTUF 100) 27:15:01 h20
02.04 100km USA6th Gorge Waterfalls 100k 10:14:11 h7
09.01 50km USA21st Bridle Trails Winter Running Festival 3:25:00 h1 🏆
2015
14.11 50km USA1st Franklin Mountains Trail Run 4:57:45 h1 🏆
16.05 50km USA1st Horseshoe Trail Run 6:32:27 h2 🥈
25.04 50mi USA12th Capitol Peak 50 Miler 7:23:46 h2 🥈
28.02 50mi USA6th Nueces 50 Mile Trail Run 8:06:08 h2 🥈
2014
22.11 50mi USA52nd JFK 50 Mile 6:24:39 h10
20.09 50km USA1st Lighthouse Hill Ranch 50K Trail Run 3:52:33 h1 🏆
30.03 100km USA1st Austin Rattler Run 100K 9:17:47 h1 🏆
2013
26.10 50mi USA7th Cactus Rose 50 Mile 8:26:26 h4
17.08 100mi USA31st Leadville Trail 100 Mile 23:41:44 h71
04.05 50mi USA14th Collegiate Peaks 50 Miles 8:25:39 h11
2012
22.09 60km USA9th Hocking Hills Indian Run 5:12:14 h3 🥉
18.08 100mi USA30th Leadville Trail 100 Mile 26:05:51 h96
Unknown date
— 100mi USA16th Pine to Palm 100 Mile Endurance Run 20:22:51 h5