J.R. Mintz
ID 27327
Born : 1966 Cat. M60 Ultrarunner since 2005 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
23,8%
Rank quotient ?This runner's calculation uses 109 eligible race(s): Σ(rank − 1) = 1 582; Σ finishers = 6 650. 1 582 / 6 650 × 100 = 23.79%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed109
Km — ultra races5 958 km
> 100 km2
Longest race119,4 km
1st San Francisco One Day, 12h — 28/10/2006

Km per year (ultra races)

251
4 races
2022
301
6 races
2023
155
3 races
2024
223
3 races
2025
150
3 races
2026

Race types (share of distance)

Road16,5%
Trail82,3%
Elim.1,1%

Wins & podiums (ultra)

🏆 Win8
🏆 Win M9
🏅 Top 320
🏅 Top 3 M23
Longest winning streak1
Current streak0

Records

50 km4h07'2450 mi6h30'126 h65,02 km12 h119,41 kmBackyard10 loops

HISTORY

110 race(s)
DateRacePerf.Rk
2026
15.08 50km USA17th Redwood Summer Trail Run 6:29:35 h19
25.07 50km USA4th Great Shasta Rail Trail 6:36:38 h8
18.04 50km USA2nd Outlands 6:50:07 h13
2025
31.12 12h USA15th New Years One Day 12 Hour Run 91.314 km4
22.11 8h USA1st The Captain’s Runaround 64.373 km1 🏆
22.03 Backyard Ultra USA2nd Bad Ass Backyard Ultra 67.060 km (10h)10
2024
31.12 6h USA14th New Years One Day 6 Hour Run 54.782 km7
27.07 50km USA4th Lost Sierra Endurance Run 50km 8:21:14 h51
29.06 50km USA6th Golden State 50K 6:44:53 h39
2023
23.09 6h USA5th Ride To Walk 6 Hour Endurance Race - Morning Start 50.871 km2 🥈
29.07 50km USA2nd Napa Wilderness Trail Runs 7:15:15 h23
01.04 50km USA1st Placer Trail Running Festival 6:19:29 h19
25.02 50km USA8th Salmon Falls 50 km Race 6:06:34 h46
18.02 50km USA2nd North Marin Ridge 50km Run 6:11:14 h16
04.02 50km USA45th Jed Smith Ultra Classic - 50 km Race 5:19:16 h31
2022
15.10 50km USA1st Mt. Umunhum Trail Conquest - Fall 6:33:24 h8
27.08 14h USA10th Run-de-Vous 14h Endurance Run 93.808 km3 🥉
28.05 55km USA2nd Lake Sonoma 100K & 50K 8:59:58 h39
16.04 6h USA5th Silver Moon Race 6 Hour Race 52.303 km2 🥈
2021
05.06 50km USA6th Ruck a Chuck 50K 8:11:03 h57
17.04 50km USA3rd Forest Ranch Four 50 km 5:26:32 h10
2020
06.06 50km USA6th The Loco Go Big or Go Home Challenge 50K 6:22:39 h8
07.03 50km USA5th Run for Amma 50 km 6:19:08 h10
2019
23.11 50km USA2nd Meat Grinder Trail Race 5:49:40 h9
21.09 6h USA1st Ride To Walk 6 Hour Endurance Race - Morning Start 51.370 km3 🥉
03.08 50km USA1st The Groves 50km Trail Race 6:08:16 h8
14.07 50km USA1st Big Chief 50K Trail Run 6:17:34 h28
04.05 50km USA6th Armstrong Redwoods 50K Trail Run 6:27:27 h13
07.04 50km USA5th Woodside Purisima Creek Crossover 6:00:28 h29
16.02 50km USA7th FOURmidable 50K 5:53:00 h60
19.01 50km USA1st Dead Truck Race 5:45:08 h6
2018
09.12 50km USA8th Spooner's Cove 50 km Trail Run 7:17:00 h20
20.10 50km USASaratoga Trail Run 50km 7:09:54 h28
02.09 6h USA20th DSE Distance Classic 6 Hour 60.350 km4
10.03 50km USA1st Chanoko 50km Trail Race 5:14:07 h6
24.02 52km USA1st Mount Umunhum Trail Run 6:21:19 h25
14.01 6h USA1st One Day in Auburn 6h Run 59.996 km2 🥈
06.01 50km USA3rd Eldrith Gosney’s Pure Ultra 7:15:00 h21
2017
03.12 50km USA1st Vista Verde Skyline Run 5:42:32 h7
22.04 50km USA1st Napa Valley 50k Trail Race 7:01:07 h15
2016
04.12 50mi USA8th Hunter S. Thompson Fear & Loathing 50 Miles 9:55:00 h9
12.11 50km USA1st Trail Run at Sly Park - Fall 5:06:10 h1 🏆
01.10 50km USA1st Sugarhood 50km Race 7:13:32 h15
01.10 50km USA1st Sonoma ULTRA 50K 7:13:32 h15
27.08 31.5mi USA17th Tamalpa Headlands 50K 5:41:40 h67
09.07 12h USA7th Dirty Dozen 12h Endurance Run 100.519 km4
04.06 50km USA5th Calero Run 50K 6:28:59 h2 🥈
24.04 50km USA1st Coyote Lake Trail Run 5:53:00 h4
17.04 50km USA8th Diablo Trails Challenge 6:53:56 h46
16.04 50km USAMokelumne River 50 km Trail Run 5:03:22 h6
2015
30.08 50km USA6th Diablo 50 km Trail Run 6:06:10 h8
25.04 50km USA6th Folsom Lake Trail Run - Spring 50K 4:41:59 h4
22.02 50km USA2nd West Coast 50K 6:08:45 h8
2014
31.12 6h USA5th New Years One Day 6 Hour Run 58.274 km11
20.09 50km USA4th Coastal 50 km Trail Run 5:07:08 h10
18.05 50km USA4th Horseshoe Lake 50 km Trail Run 5:14:24 h3 🥉
2013
04.04 50km USA2nd Grizzly Peak 50k 7:03:24 h19
09.03 6h USA1st Razorback 6 hour Endurance Race 65.017 km1 🏆
23.02 50km USA3rd Chabot Trail Run 4:56:05 h13
02.02 50km USA1st Fort Ord 50K Trail Run 4:45:08 h10
2012
09.12 50km USA4th Hunter S. Thompson Fear & Loathing 50 km 5:55:00 h6
11.11 50km USA1st Mt. Tam Trail Run 6:09:14 h14
06.10 50km USA12th Rio Del Lago 50 km 5:40:37 h12
29.09 50km USA1st Berkeley Trail Adventure 5:12:48 h8
02.09 50km USA3rd Coyote Ridge 50 km Trail Run 5:44:38 h4
18.08 50km USA2nd Run-de-Vous 50 km Endurance Run 4:48:00 h3 🥉
30.06 50km USA1st Marin Ultra Challenge 50 km Race 6:36:49 h32
06.05 50km USA1st Big Trees Trail Run 7:33:01 h9
17.03 50km USA2nd Canyon Meadow (Winter) 50 km Trail Run 5:17:56 h13
18.02 38mi USA1st Folsom South Side Trail Run 38 Miles 6:37:25 h2 🥈
22.01 50km USA1st Brooks Falls Trail 5:45:45 h6
08.01 61km USA32nd Epiphany Ultras - The Popular But Wussy Metric 7:25:45 h1 🏆
2011
03.12 50km USA10th Woodside Trail Run 50K 5:02:36 h13
08.10 50mi USA29th Dick Collins Firetrails 50 Mile 10:11:21 h95
21.08 50km USA16th Run On The Sly 50 km 5:13:35 h14
13.08 50km USA7th Salt Point Trail Run 5:28:55 h4
16.07 50km USA10th Tahoe Rim Trail 50km Endurance Runs 7:42:13 h55
10.07 6h USA15th DSE Distance Classic 6 Hour 64.885 km2 🥈
12.06 50km USA2nd San Lorenzo River Trail Run 5:26:00 h8
14.05 50km USA1st Warm Springs Trail Runs 6:07:31 h1 🏆
23.04 50km USA3rd Folsom Point - Spring 4:41:00 h6
19.03 50km USA10th Pirates Cove Trail Run 5:23:26 h18
26.02 50km USA8th Pony Express 50K Sprint 4:54:40 h4
2010
04.12 50km USA4th Endurance Challenge - California Trail 50 km 5:52:21 h32
23.10 50km USA11th Whiskeytown 50km Trail Run 5:09:23 h8
15.08 50km USA9th Stevens Creek Striders 50K 6:05:55 h13
10.07 6h USA1st Dirty Dozen 6h Endurance Run 59.867 km2 🥈
05.06 50km USA21st Shadow of the Giants 50K 5:20:45 h15
18.04 50km USA3rd Skyline to the Sea 50km 4:46:58 h17
2009
28.11 28mi USA25th Quad Dipsea Trail Run 6:18:29 h83
09.05 50km USA26th Quicksilver 50 km Endurance Run 4:58:41 h7
22.03 50km USA1st Diablo Trails Challenge 6:36:16 h7
07.02 50km USA31st Jed Smith Ultra Classic - 50 km Race 4:07:24 h10
05.01 58km USA30th Epiphany Ultras - The Popular But Wussy Metric 6:48:00 h1 🏆
2008
18.05 50km USA21st Ohlone 50K Wilderness Run 6:51:13 h36
22.03 50km USA4th Rucky Chucky Roundabout 50K 6:29:32 h38
2007
14.04 50km USA1st Tehama Wildflowers Trail Run 5:13:37 h11
31.03 50km USA21th Ruth Anderson Ultra 50km 4:45:15 h14
2006
04.11 50km USA11th Helen Klein Ultra Classic 50km 4:09:48 h5
28.10 12h USA1st San Francisco One Day, 12h 119.413 km1 🏆
14.10 32.8mi USA2nd Lake of the Sky 32 Mile 6:08:46 h8
26.08 31.5mi USA9th Tamalpa Headlands 50K 4:48:00 h16
06.08 50km USA25th Skyline 50k Endurance Run 4:17:45 h5
20.05 50km USA21st Silver State 50 km 6:41:25 h4
22.04 50km USA20th Ruth Anderson Ultra 50mi - 50km Split 3:46:00 h2 🥈
22.04 50mi USA20th Ruth Anderson Ultra 50mi 6:30:12 h1 🏆
11.03 50km USA17th Way Too Cool 50K Endurance Run 4:26:02 h27
2005
24.09 53.2mi USA19th Sierra Nevada Endurance 53 Mile Run 8:13:29 h2 🥈
02.04 50mi USA26th American River 50 Mile Endurance Run 7:28:21 h24
05.02 50km USA4th Woodside Trail Run 50K 5:00:51 h8