John Zerbe

Born : 1968 Cat. M55 Ultrarunner since 2005

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

United States

42,4%

Rank quotient ?This runner's calculation uses 96 eligible race(s): Σ(rank − 1) = 8 436; Σ finishers = 19 881. 8 436 / 19 881 × 100 = 42.43%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed96

Km — ultra races6 891 km

> 100 km9

> 160 km8

> 24h1

Longest race160,9 km

45th Western States 100 Mile Endurance Run — 23/6/2018

Km per year (ultra races)

226

2022

2023

2024

2025

2026

Race types (share of distance)

Road8,0%

Trail92,0%

Records

50 km4h56'27 100 km11h24'13 50 mi7h51'35 100 mi21h55'29 24 h148,86 km

HISTORY

96 race(s)

Date		Race	Perf.	Rk
2025
29.11	28.4mi	40th Quad Dipsea Trail Run	6:53:50 h	157
2024
08.12	50km	16th Hunter S. Thompson Fear & Loathing 50 km	5:30:41 h	11
30.11	28mi	39th Quad Dipsea Trail Run	7:03:27 h	184
2023
25.11	28mi	38th Quad Dipsea Trail Run	6:53:09 h	197
2022
26.11	28mi	37th Quad Dipsea Trail Run	7:19:24 h	195
30.10	50km	3rd Marine Corps 50km Marathon Race	5:04:11 h	285
30.07	50mi	41th Minnesota Voyageur Trail 50 Mile Ultra	11:45:27 h	76
21.05	50km	9th San Francisco 50 km Endurance Run	6:22:27 h	12
2021
05.12	50km	13th Hunter S. Thompson Fear & Loathing 50 km	5:40:00 h	7
27.11	28mi	36th Quad Dipsea Trail Run	6:51:49 h	129
23.10	50km	14th Surf the Murph 50 km Run	6:27:51 h	14
05.09	50mi	13th Lake Sonoma 50 Mile Race	12:50:43 h	69
2020
06.12	50km	12th Hunter S. Thompson Fear & Loathing 50 km	5:47:00 h	11
2019
08.12	50km	11th Hunter S. Thompson Fear & Loathing 50 km	5:32:00 h	4
30.11	28mi	35th Quad Dipsea Trail Run	6:41:01 h	121
09.11	50km	7th Mt. Tam Trail Run	6:52:17 h	42
24.08	31.5mi	20th Tamalpa Headlands 50K	6:51:40 h	58
27.07	50mi	38th Minnesota Voyageur Trail 50 Mile Ultra	11:09:09 h	83
04.05	100km	24th Miwok 100k Trail Race	14:13:44 h	159
13.04	50km	11th Diablo Trails Challenge	7:05:33 h	38
09.03	50km	8th Marin Ultra Challenge 50 km Race	6:52:14 h	163
2018
08.12	50km	10th Hunter S. Thompson Fear & Loathing 50 km	6:13:00 h	8
24.11	28mi	34th Quad Dipsea Trail Run	6:45:54 h	119
25.08	31.5mi	19th Tamalpa Headlands 50K	6:24:54 h	48
28.07	50mi	37th Minnesota Voyageur Trail 50 Mile Ultra	10:04:29 h	95
23.06	100mi	45th Western States 100 Mile Endurance Run	23:47:27 h	117
05.05	100km	23nd Miwok 100k Trail Race	13:03:58 h	97
14.04	50mi	10th Lake Sonoma 50 Mile Race	10:54:31 h	132
07.04	50km	2nd Napa Valley 50k Trail Race	7:40:37 h	21
10.03	50km	7th Marin Ultra Challenge 50 km Race	5:57:12 h	85
24.02	52km	1st Mount Umunhum Trail Run	7:11:00 h	45
21.01	50km	8th Crystal Springs 50 km Winter Trail Run	6:20:37 h	25
2017
09.12	50km	9th Hunter S. Thompson Fear & Loathing 50 km	5:42:00 h	4
25.11	28mi	33rd Quad Dipsea Trail Run	7:22:12 h	182
26.08	31.5mi	18th Tamalpa Headlands 50K	6:39:47 h	46
29.07	50mi	36th Minnesota Voyageur Trail 50 Mile Ultra	10:50:26 h	113
06.05	100km	22nd Miwok 100k Trail Race	14:35:38 h	201
15.04	50mi	9th Lake Sonoma 50 Mile Race	11:54:30 h	192
11.03	50km	6th Marin Ultra Challenge 50 km Race	6:42:52 h	121
2016
26.11	28mi	32nd Quad Dipsea Trail Run	7:27:23 h	184
27.08	31.5mi	17th Tamalpa Headlands 50K	6:18:13 h	102
30.07	50mi	35th Minnesota Voyageur Trail 50 Mile Ultra	10:40:51 h	95
07.05	100km	21st Miwok 100k Trail Race	14:30:14 h	203
09.04	50mi	8th Lake Sonoma 50 Mile Race	13:24:13 h	288
12.03	50km	5th Marin Ultra Challenge 50 km Race	6:55:49 h	133
2015
28.11	28mi	31st Quad Dipsea Trail Run	7:45:32 h	233
29.08	31.5mi	16th Tamalpa Headlands 50K	6:10:19 h	98
25.07	50mi	34th Minnesota Voyageur Trail 50 Mile Ultra	10:49:18 h	70
02.05	100km	20th Miwok 100k Trail Race	14:16:00 h	190
2014
07.12	50km	6th Hunter S. Thompson Fear & Loathing 50 km	5:50:06 h	4
29.11	28mi	30th Quad Dipsea Trail Run	7:52:17 h	209
20.09	50km	4th Coastal 50 km Trail Run	5:50:55 h	23
23.08	31.5mi	15th Tamalpa Headlands 50K	6:02:40 h	65
26.07	50mi	33rd Minnesota Voyageur Trail 50 Mile Ultra	10:43:18 h	71
03.05	100km	19th Miwok 100k Trail Race	13:48:23 h	169
12.04	50mi	6th Lake Sonoma 50 Mile Race	10:36:50 h	159
15.03	50km	3rd Marin Ultra Challenge 50 km Race	6:23:36 h	72
2013
30.11	28mi	29th Quad Dipsea Trail Run	5:56:56 h	71
12.10	50mi	31st Dick Collins Firetrails 50 Mile	9:14:35 h	63
21.09	50km	3rd Coastal 50 km Trail Run	5:30:04 h	20
24.08	31.5mi	14th Tamalpa Headlands 50K	5:27:03 h	29
11.08	50km	32nd Skyline 50k Endurance Run	4:56:27 h	36
29.06	100mi	40th Western States 100 Mile Endurance Run	23:42:45 h	87
01.06	100mi	35th Old Dominion 100 Mile Endurance Run	23:29:29 h	13
04.05	60km	18th Miwok 60k Trail race	7:07:54 h	88
13.04	50mi	5th Lake Sonoma 50 Mile Race	10:14:43 h	122
2012
24.11	28mi	28th Quad Dipsea Trail Run	6:35:05 h	82
25.08	31.5mi	13th Tamalpa Headlands 50K	5:58:10 h	61
12.08	50km	31st Skyline 50k Endurance Run	5:15:58 h	54
23.06	100mi	39th Western States 100 Mile Endurance Run	23:50:21 h	139
05.05	100km	17th Miwok 100k Trail race	13:45:30 h	103
18.03	50km	1st Rodeo Valley 50 km Trail Run	5:45:12 h	12
2011
26.11	28mi	27th Quad Dipsea Trail Run	5:47:59 h	62
30.07	50mi	30th Minnesota Voyageur Trail 50 Mile Ultra	10:26:36 h	34
07.05	100km	16th Miwok 100k Trail race	12:33:54 h	124
2010
09.10	50mi	28th Dick Collins Firetrails 50 Mile	9:23:04 h	69
2009
28.11	28mi	25th Quad Dipsea Trail Run	5:51:38 h	50
01.08	100mi	3rd Burning River 100 Mile Endurance Run	21:55:29 h	15
02.05	100km	14th Miwok 100k Trail race	12:45:39 h	109
26.04	50km	2nd Skyline to the Sea 50km	5:19:00 h	41
2008
29.11	28mi	24th Quad Dipsea Trail Run	6:33:33 h	134
16.08	100mi	26th Leadville Trail 100 Mile	28:38:41 h	114
03.05	100km	13th Miwok 100k Trail race	12:01:21 h	82
2007
24.11	28mi	23rd Quad Dipsea Trail Run	8:28:23 h	228
11.08	50mi	1st Headlands Hundred 50 Mile Endurance Run	9:57:21 h	14
23.06	100mi	34th Western States 100 Mile Endurance Run	22:22:09 h	48
05.05	100km	12th Miwok 100k Trail race	11:24:13 h	48
29.04	50mi	5th Diablo Endurance Run	11:25:21 h	15
2006
25.11	28mi	22nd Quad Dipsea Trail Run	5:35:47 h	59
28.10	24h	1st San Francisco One Day, 24h	148.864 km	8
26.08	31.5mi	9th Tamalpa Headlands 50K	5:20:28 h	41
22.07	100mi	18th Vermont 100 Mile Endurance Race	22:13:04 h	30
06.05	100km	11th Miwok 100k Trail race	12:22:50 h	95
2005
26.11	28mi	21st Quad Dipsea Trail Run	5:32:01 h	45
05.11	50mi	10th Helen Klein Ultra Classic 50mi	7:51:35 h	19
27.08	31.5mi	8th Tamalpa Headlands 50K	5:13:10 h	34

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	23/6/2018	45th Western States 100 Mile Endurance Run	160,93	×3
✓ 2	29/6/2013	40th Western States 100 Mile Endurance Run	160,93	×3
✓ 3	1/6/2013	35th Old Dominion 100 Mile Endurance Run	160,93	×3
✓ 4	23/6/2012	39th Western States 100 Mile Endurance Run	160,93	×3
✓ 5	1/8/2009	3rd Burning River 100 Mile Endurance Run	160,93	×3
✓ 6	16/8/2008	26th Leadville Trail 100 Mile	160,93	×3
✓ 7	23/6/2007	34th Western States 100 Mile Endurance Run	160,93	×3
✓ 8	22/7/2006	18th Vermont 100 Mile Endurance Race	160,93	×3
✓ 9	28/10/2006	1st San Francisco One Day, 24h	148,86	×2
✓ 10	4/5/2019	24th Miwok 100k Trail Race	100,00	×1
✓ 11	5/5/2018	23nd Miwok 100k Trail Race	100,00	×1
✓ 12	6/5/2017	22nd Miwok 100k Trail Race	100,00	×1
✓ 13	7/5/2016	21st Miwok 100k Trail Race	100,00	×1
✓ 14	2/5/2015	20th Miwok 100k Trail Race	100,00	×1
✓ 15	3/5/2014	19th Miwok 100k Trail Race	100,00	×1
✓ 16	5/5/2012	17th Miwok 100k Trail race	100,00	×1
✓ 17	7/5/2011	16th Miwok 100k Trail race	100,00	×1
✓ 18	2/5/2009	14th Miwok 100k Trail race	100,00	×1
✓ 19	3/5/2008	13th Miwok 100k Trail race	100,00	×1
✓ 20	5/5/2007	12th Miwok 100k Trail race	100,00	×1
✓ 21	6/5/2006	11th Miwok 100k Trail race	100,00	×1
✓ 22	30/7/2022	41th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 23	5/9/2021	13th Lake Sonoma 50 Mile Race	80,47	×1
✓ 24	27/7/2019	38th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 25	28/7/2018	37th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 26	14/4/2018	10th Lake Sonoma 50 Mile Race	80,47	×1
✓ 27	29/7/2017	36th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 28	15/4/2017	9th Lake Sonoma 50 Mile Race	80,47	×1
✓ 29	30/7/2016	35th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 30	9/4/2016	8th Lake Sonoma 50 Mile Race	80,47	×1
✓ 31	25/7/2015	34th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 32	26/7/2014	33rd Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 33	12/4/2014	6th Lake Sonoma 50 Mile Race	80,47	×1
✓ 34	12/10/2013	31st Dick Collins Firetrails 50 Mile	80,47	×1
✓ 35	13/4/2013	5th Lake Sonoma 50 Mile Race	80,47	×1
✓ 36	30/7/2011	30th Minnesota Voyageur Trail 50 Mile Ultra	80,47	×1
✓ 37	9/10/2010	28th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 38	11/8/2007	1st Headlands Hundred 50 Mile Endurance Run	80,47	×1
✓ 39	29/4/2007	5th Diablo Endurance Run	80,47	×1
✓ 40	5/11/2005	10th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 41	4/5/2013	18th Miwok 60k Trail race	60,00	×1
✓ 42	24/2/2018	1st Mount Umunhum Trail Run	52,00	—
✓ 43	24/8/2019	20th Tamalpa Headlands 50K	50,69	—
✓ 44	25/8/2018	19th Tamalpa Headlands 50K	50,69	—
✓ 45	26/8/2017	18th Tamalpa Headlands 50K	50,69	—
✓ 46	27/8/2016	17th Tamalpa Headlands 50K	50,69	—
✓ 47	29/8/2015	16th Tamalpa Headlands 50K	50,69	—
✓ 48	23/8/2014	15th Tamalpa Headlands 50K	50,69	—
✓ 49	24/8/2013	14th Tamalpa Headlands 50K	50,69	—
✓ 50	25/8/2012	13th Tamalpa Headlands 50K	50,69	—
51	26/8/2006	9th Tamalpa Headlands 50K	50,69	—
52	27/8/2005	8th Tamalpa Headlands 50K	50,69	—
53	8/12/2024	16th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
54	30/10/2022	3rd Marine Corps 50km Marathon Race	50,00	—
55	21/5/2022	9th San Francisco 50 km Endurance Run	50,00	—
56	5/12/2021	13th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
57	23/10/2021	14th Surf the Murph 50 km Run	50,00	—
58	6/12/2020	12th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
59	8/12/2019	11th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
60	9/11/2019	7th Mt. Tam Trail Run	50,00	—
61	13/4/2019	11th Diablo Trails Challenge	50,00	—
62	9/3/2019	8th Marin Ultra Challenge 50 km Race	50,00	—
63	8/12/2018	10th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
64	7/4/2018	2nd Napa Valley 50k Trail Race	50,00	—
65	10/3/2018	7th Marin Ultra Challenge 50 km Race	50,00	—
66	21/1/2018	8th Crystal Springs 50 km Winter Trail Run	50,00	—
67	9/12/2017	9th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
68	11/3/2017	6th Marin Ultra Challenge 50 km Race	50,00	—
69	12/3/2016	5th Marin Ultra Challenge 50 km Race	50,00	—
70	7/12/2014	6th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
71	20/9/2014	4th Coastal 50 km Trail Run	50,00	—
72	15/3/2014	3rd Marin Ultra Challenge 50 km Race	50,00	—
73	21/9/2013	3rd Coastal 50 km Trail Run	50,00	—
74	11/8/2013	32nd Skyline 50k Endurance Run	50,00	—
75	12/8/2012	31st Skyline 50k Endurance Run	50,00	—
76	18/3/2012	1st Rodeo Valley 50 km Trail Run	50,00	—
77	26/4/2009	2nd Skyline to the Sea 50km	50,00	—
78	29/11/2025	40th Quad Dipsea Trail Run	45,71	—
79	30/11/2024	39th Quad Dipsea Trail Run	45,06	—
80	25/11/2023	38th Quad Dipsea Trail Run	45,06	—
81	26/11/2022	37th Quad Dipsea Trail Run	45,06	—
82	27/11/2021	36th Quad Dipsea Trail Run	45,06	—
83	30/11/2019	35th Quad Dipsea Trail Run	45,06	—
84	24/11/2018	34th Quad Dipsea Trail Run	45,06	—
85	25/11/2017	33rd Quad Dipsea Trail Run	45,06	—
86	26/11/2016	32nd Quad Dipsea Trail Run	45,06	—
87	28/11/2015	31st Quad Dipsea Trail Run	45,06	—
88	29/11/2014	30th Quad Dipsea Trail Run	45,06	—
89	30/11/2013	29th Quad Dipsea Trail Run	45,06	—
90	24/11/2012	28th Quad Dipsea Trail Run	45,06	—
91	26/11/2011	27th Quad Dipsea Trail Run	45,06	—
92	28/11/2009	25th Quad Dipsea Trail Run	45,06	—
93	29/11/2008	24th Quad Dipsea Trail Run	45,06	—
94	24/11/2007	23rd Quad Dipsea Trail Run	45,06	—
95	25/11/2006	22nd Quad Dipsea Trail Run	45,06	—
96	26/11/2005	21st Quad Dipsea Trail Run	45,06	—