Herb Tanzer

Born : 1952 Cat. M70 Ultrarunner since 1981

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 ?

South Africa

United States

5,5%

Rank quotient ?This runner's calculation uses 67 eligible race(s): Σ(rank − 1) = 3 198; Σ finishers = 57 707. 3 198 / 57 707 × 100 = 5.54%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed67

Km — ultra races5 867 km

> 100 km11

> 160 km10

Longest race160,9 km

37th Western States 100 Mile Endurance Run — 26/6/2010

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road11,6%

Trail88,4%

Wins & podiums (ultra)

🏆 Win4

🏆 Win M4

🏅 Top 314

🏅 Top 3 M14

Longest winning streak1

Current streak0

Records

50 km3h46'05 100 km7h32'57 50 mi5h59'48 100 mi17h20'54

HISTORY

67 race(s) · 3 split(s) nested

Date		Race	Perf.	Rk
2013
06.04	50mi	34th American River 50 Mile Endurance Run	10:23:34 h	388
2011
07.05	50mi	12th Collegiate Peaks 50 Miles	10:41:49 h	57
2010
26.06	100mi	37th Western States 100 Mile Endurance Run	29:54:59 h	327
10.04	50mi	31st American River 50 Mile Endurance Run	8:48:32 h	122
2009
17.10	50mi	25th Palo Duro 50 Mile Trail Run	9:50:12 h	9
2007
05.05	100km	12th Miwok 100k Trail race	11:57:08 h	68
14.04	50mi	28th American River 50 Mile Endurance Run	7:51:31 h	41
2006
21.10	50mi	22nd Palo Duro 50 Mile Trail Run	8:06:20 h	3 🥉
2004
03.04	50mi	25th American River 50 Mile Endurance Run	8:17:01 h	44
2002
24.08	31.5mi	5th Tamalpa Headlands 50K	4:42:09 h	27
17.06	87km road race	77th Comrades Marathon - Up Run	7:36:03 h	659
06.04	50mi	23rd American River 50 Mile Endurance Run	6:50:32 h	8
2001
23.06	100mi	28th Western States 100 Mile Endurance Run	23:20:34 h	63
05.05	100km	6th Miwok 100k Trail race	10:08:23 h	9
07.04	50mi	22nd American River 50 Mile Endurance Run	7:02:11 h	9
10.03	50km	12th Way Too Cool 50K Endurance Run	4:20:55 h	30
2000
11.11	50mi	5th Helen Klein Ultra Classic 50mi	6:38:27 h	3 🥉
16.06	87km road race	75th Comrades Marathon - Up Run	7:08:51 h	355
01.04	50mi	21st American River 50 Mile Endurance Run	6:57:58 h	8
11.03	50km	11th Way Too Cool 50K Endurance Run	4:24:12 h	22
1999
16.06	89km	74th Comrades Marathon - Down Run	7:11:05 h	433
10.04	50mi	20th American River 50 Mile Endurance Run	6:50:29 h	13
13.03	50km	10th Way Too Cool 50K Endurance Run	4:11:03 h	14
1998
06.06	50km	9th Shadow of the Giants 50K	4:40:03 h	5
04.04	50mi	19th American River 50 Mile Endurance Run	6:47:28 h	14
14.03	50km	9th Way Too Cool 50K Endurance Run	4:09:18 h	12
1997
29.11	28mi	13th Quad Dipsea Trail Run	4:48:01 h	13
22.11	50mi	35th JFK 50 Mile	7:09:35 h	17
15.11	50km	2nd Helen Klein Ultra Classic 50km	3:46:05 h	2 🥈
25.10	52.4mi	11th Sierra Nevada Endurance 52 Mile Run	8:06:30 h	10
28.06	100mi	24th Western States 100 Mile Endurance Run	23:11:15 h	68
05.04	50mi	18th American River 50 Mile Endurance Run	6:51:31 h	21
15.03	50km	8th Way Too Cool 50K Endurance Run	4:05:12 h	14
1996
30.11	28mi	12th Quad Dipsea Trail Run	4:36:11 h	9
06.04	50mi	17th American River 50 Mile Endurance Run	7:23:40 h	28
09.03	50km	7th Way Too Cool 50K Endurance Run	4:50:45 h	54
1995
06.05	40mi	17th Strolling Jim 40 Mile	5:25:38 h	14
1994
02.04	50mi	15th American River 50 Mile Endurance Run	6:23:08 h	7
12.03	50km	5th Way Too Cool 50K Endurance Run	4:06:01 h	12
1993
03.04	50mi	14th American River 50 Mile Endurance Run	6:23:16 h	6
27.02	100km	New York Ultimax 100km Race	7:33:22 h	6
27.02	50km	New York Ultimax 100km Race - 50km Split	3:33:18 h	9
27.02	50mi	New York Ultimax 100km Race - 50mi Split	6:03:40 h	8
17.01	40.5mi	Spunky Canyon Ultra	4:54:56 h	4
1992
27.06	100mi	19th Western States 100 Mile Endurance Run	23:23:56 h	51
04.04	50mi	13th American River 50 Mile Endurance Run	6:13:00 h	2 🥈
18.01	100km	TAC/USA National 100 km Championship	7:33:54 h	4
18.01	50km	TAC/USA National 100 km Championship - 50km Split	3:29:45 h	4
11.01	50mi	12th Avalon Benefit 50-Mile Run	8:53:56 h	33
1991
26.10	100km	9th Edmund Fitzgerald 100K Road Race	7:32:57 h	7
24.08	50km	Mule Run 50K	4:13:47 h	1 🏆
1990
29.09	100mi	5th Angeles Crest 100 Mile	23:51:02 h	18
02.06	50km	1st Shadow of the Giants 50K	3:58:04 h	4
07.04	50mi	11th American River 50 Mile Endurance Run	5:59:48 h	3 🥉
1989
24.06	100mi	16th Western States 100 Mile Endurance Run	18:00:13 h	7
1988
25.06	100mi	15th Western States 100 Mile Endurance Run	17:20:54 h	2 🥈
02.06	50mi	7th Ice Age Trail 50 Mile Run	6:04:48 h	2 🥈
10.04	50mi	9th American River 50 Mile Endurance Run	6:16:04 h	3 🥉
1987
27.06	100mi	14th Western States 100 Mile Endurance Run	17:41:06 h	1 🏆
12.04	50mi	8th American River 50 Mile Endurance Run	6:04:21 h	2 🥈
1986
16.11	50mi	3rd San Juan Trail 50 Mile	6:43:27 h	1 🏆
28.06	100mi	13th Western States 100 Mile Endurance Run	18:35:45 h	4
1985
04.08	50km	4th Skyline 50k Endurance Run	4:32:50 h	45
06.07	100mi	12th Western States 100 Mile Endurance Run	18:11:24 h	7
06.04	52.4mi	The Forty-Niner Double Marathon Trail Run	6:57:39 h	1 🏆
1984
06.10	51mi	Cow Mountain Trail Run	6:30:00 h	2 🥈
1983
17.04	50mi	4th American River 50 Mile Endurance Run	6:28:52 h	9
1982
26.06	93.5mi	9th Western States 100 Mile Endurance Run	21:01:00 h	17
25.04	50km	SPA-TAC 50 km Championships	3:48:30 h	5
1981
07.11	50mi	Pacific Crest Trail Fifty	8:58:00 h	6

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	26/6/2010	37th Western States 100 Mile Endurance Run	160,93	×2
✓ 2	23/6/2001	28th Western States 100 Mile Endurance Run	160,93	×2
✓ 3	28/6/1997	24th Western States 100 Mile Endurance Run	160,93	×2
✓ 4	27/6/1992	19th Western States 100 Mile Endurance Run	160,93	×2
✓ 5	29/9/1990	5th Angeles Crest 100 Mile	160,93	×2
✓ 6	24/6/1989	16th Western States 100 Mile Endurance Run	160,93	×2
✓ 7	25/6/1988	15th Western States 100 Mile Endurance Run	160,93	×2
✓ 8	27/6/1987	14th Western States 100 Mile Endurance Run	160,93	×2
✓ 9	28/6/1986	13th Western States 100 Mile Endurance Run	160,93	×2
✓ 10	6/7/1985	12th Western States 100 Mile Endurance Run	160,93	×2
✓ 11	26/6/1982	9th Western States 100 Mile Endurance Run	150,47	×2
✓ 12	5/5/2007	12th Miwok 100k Trail race	100,00	×1
✓ 13	5/5/2001	6th Miwok 100k Trail race	100,00	×1
✓ 14	27/2/1993	New York Ultimax 100km Race	100,00	×1
✓ 15	18/1/1992	TAC/USA National 100 km Championship	100,00	×1
✓ 16	26/10/1991	9th Edmund Fitzgerald 100K Road Race	100,00	×1
✓ 17	16/6/1999	74th Comrades Marathon - Down Run	89,00	×1
✓ 18	17/6/2002	77th Comrades Marathon - Up Run (RSA)	87,00	×1
✓ 19	16/6/2000	75th Comrades Marathon - Up Run (RSA)	87,00	×1
✓ 20	25/10/1997	11th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 21	6/4/1985	The Forty-Niner Double Marathon Trail Run	84,33	×1
✓ 22	6/10/1984	Cow Mountain Trail Run	82,08	×1
✓ 23	6/4/2013	34th American River 50 Mile Endurance Run	80,47	×1
✓ 24	7/5/2011	12th Collegiate Peaks 50 Miles	80,47	×1
✓ 25	10/4/2010	31st American River 50 Mile Endurance Run	80,47	×1
✓ 26	17/10/2009	25th Palo Duro 50 Mile Trail Run	80,47	×1
✓ 27	14/4/2007	28th American River 50 Mile Endurance Run	80,47	×1
✓ 28	21/10/2006	22nd Palo Duro 50 Mile Trail Run	80,47	×1
✓ 29	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 30	6/4/2002	23rd American River 50 Mile Endurance Run	80,47	×1
✓ 31	7/4/2001	22nd American River 50 Mile Endurance Run	80,47	×1
✓ 32	11/11/2000	5th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 33	1/4/2000	21st American River 50 Mile Endurance Run	80,47	×1
✓ 34	10/4/1999	20th American River 50 Mile Endurance Run	80,47	×1
✓ 35	4/4/1998	19th American River 50 Mile Endurance Run	80,47	×1
✓ 36	22/11/1997	35th JFK 50 Mile	80,47	×1
✓ 37	5/4/1997	18th American River 50 Mile Endurance Run	80,47	×1
✓ 38	6/4/1996	17th American River 50 Mile Endurance Run	80,47	×1
✓ 39	2/4/1994	15th American River 50 Mile Endurance Run	80,47	×1
✓ 40	3/4/1993	14th American River 50 Mile Endurance Run	80,47	×1
✓ 41	4/4/1992	13th American River 50 Mile Endurance Run	80,47	×1
✓ 42	11/1/1992	12th Avalon Benefit 50-Mile Run	80,47	×1
✓ 43	7/4/1990	11th American River 50 Mile Endurance Run	80,47	×1
✓ 44	2/6/1988	7th Ice Age Trail 50 Mile Run	80,47	×1
✓ 45	10/4/1988	9th American River 50 Mile Endurance Run	80,47	×1
✓ 46	12/4/1987	8th American River 50 Mile Endurance Run	80,47	×1
✓ 47	16/11/1986	3rd San Juan Trail 50 Mile	80,47	×1
✓ 48	17/4/1983	4th American River 50 Mile Endurance Run	80,47	×1
✓ 49	7/11/1981	Pacific Crest Trail Fifty	80,47	×1
✓ 50	17/1/1993	Spunky Canyon Ultra	65,18	×1
✓ 51	6/5/1995	17th Strolling Jim 40 Mile	64,37	×1
52	24/8/2002	5th Tamalpa Headlands 50K	50,69	—
53	10/3/2001	12th Way Too Cool 50K Endurance Run	50,00	—
54	11/3/2000	11th Way Too Cool 50K Endurance Run	50,00	—
55	13/3/1999	10th Way Too Cool 50K Endurance Run	50,00	—
56	6/6/1998	9th Shadow of the Giants 50K	50,00	—
57	14/3/1998	9th Way Too Cool 50K Endurance Run	50,00	—
58	15/11/1997	2nd Helen Klein Ultra Classic 50km	50,00	—
59	15/3/1997	8th Way Too Cool 50K Endurance Run	50,00	—
60	9/3/1996	7th Way Too Cool 50K Endurance Run	50,00	—
61	12/3/1994	5th Way Too Cool 50K Endurance Run	50,00	—
62	24/8/1991	Mule Run 50K	50,00	—
63	2/6/1990	1st Shadow of the Giants 50K	50,00	—
64	4/8/1985	4th Skyline 50k Endurance Run	50,00	—
65	25/4/1982	SPA-TAC 50 km Championships	50,00	—
66	29/11/1997	13th Quad Dipsea Trail Run	45,06	—
67	30/11/1996	12th Quad Dipsea Trail Run	45,06	—