Robert Silverman

ID 119150

Born : 1947 Cat. M75 Ultrarunner since 1982

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

24,1%

Rank quotient ?This runner's calculation uses 40 eligible race(s): Σ(rank − 1) = 1 295; Σ finishers = 5 373. 1 295 / 5 373 × 100 = 24.10%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed40

Km — ultra races3 250 km

> 100 km3

> 160 km3

Longest race160,9 km

5th Vermont 100 Mile Endurance Race — 31/7/1993

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road3,1%

Trail96,9%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

50 km3h48'24 50 mi7h27'15 100 mi17h56'32

HISTORY

40 race(s)

Date		Race	Perf.	Rk
2011
04.12	50km	25th OTHTC High Desert 50K Ultra	5:50:27 h	88
15.01	50mi	31st Avalon Benefit 50-Mile Run	10:52:13 h	120
2010
16.01	50mi	30th Avalon Benefit 50-Mile Run	10:12:35 h	57
2009
17.01	50mi	29th Avalon Benefit 50-Mile Run	10:21:35 h	59
2008
12.01	50mi	28th Avalon Benefit 50-Mile Run	9:39:00 h	45
2007
13.01	50mi	27th Avalon Benefit 50-Mile Run	9:38:24 h	56
2006
14.01	50mi	26th Avalon Benefit 50-Mile Run	9:37:30 h	41
2005
02.04	50mi	25th Avalon Benefit 50-Mile Run	11:40:30 h	58
2004
10.01	50mi	24th Avalon Benefit 50-Mile Run	10:30:06 h	58
2003
11.01	50mi	23rd Avalon Benefit 50-Mile Run	10:13:48 h	73
2002
12.01	50mi	22nd Avalon Benefit 50-Mile Run	9:21:04 h	39
2001
13.01	50mi	21st Avalon Benefit 50-Mile Run	8:30:11 h	32
1999
11.09	50km	8th Bulldog 50k Ultra Run	6:03:58 h	44
09.01	50mi	19th Avalon Benefit 50-Mile Run	8:55:21 h	37
1998
10.01	50mi	18th Avalon Benefit 50-Mile Run	8:50:11 h	30
1997
06.09	50km	6th Bulldog 50k Ultra Run	5:25:15 h	28
11.01	50mi	17th Avalon Benefit 50-Mile Run	8:06:20 h	28
1996
06.01	50mi	16th Avalon Benefit 50-Mile Run	8:42:00 h	22
1995
07.01	50mi	15th Avalon Benefit 50-Mile Run	8:18:06 h	12
1994
08.01	50mi	14th Avalon Benefit 50-Mile Run	7:42:53 h	14
1993
31.07	100mi	5th Vermont 100 Mile Endurance Race	17:56:32 h	9
09.01	50mi	13th Avalon Benefit 50-Mile Run	8:20:00 h	15
1992
25.07	100mi	4th Vermont 100 Mile Endurance Race	18:27:21 h	18
11.01	50mi	12th Avalon Benefit 50-Mile Run	7:46:40 h	4
1991
13.04	50km	Cuyamaca 50 km Trail Race	4:41:50 h	32
05.01	50mi	11th Avalon Benefit 50-Mile Run	7:48:58 h	11
1990
06.01	50mi	10th Avalon Benefit 50-Mile Run	7:39:38 h	10
1986
16.11	50mi	3rd San Juan Trail 50 Mile	8:52:50 h	34
28.06	100mi	13th Western States 100 Mile Endurance Run	23:17:25 h	58
04.01	50mi	6th Avalon Benefit 50-Mile Run	7:27:15 h	4
1985
04.08	50km	4th Skyline 50k Endurance Run	4:14:23 h	24
06.04	52.4mi	The Forty-Niner Double Marathon Trail Run	8:26:04 h	19
05.01	50mi	5th Avalon Benefit 50-Mile Run	7:37:49 h	10
1984
06.10	51mi	Cow Mountain Trail Run	7:15:00 h	6
08.09	50mi	Drake's Bay 50 Mile Run	9:39:00 h	3 🥉
02.06	50mi	Nugget 50 Mile Trail Run	8:17:02 h	9
15.04	50mi	5th American River 50 Mile Endurance Run	7:57:12 h	63
25.02	50km	Royal Bricker/Gym Bag 50 km Run	3:48:24 h	19
1983
08.10	48.6mi	Cow Mountain Planet Earth Run	7:38:40 h	10
1982
08.05	50km	Royal Bricker/Gym Bag 50 km Run	4:09:40 h	36

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	31/7/1993	5th Vermont 100 Mile Endurance Race	160,93	×3
✓ 2	25/7/1992	4th Vermont 100 Mile Endurance Race	160,93	×3
✓ 3	28/6/1986	13th Western States 100 Mile Endurance Run	160,93	×3
✓ 4	6/4/1985	The Forty-Niner Double Marathon Trail Run	84,33	×1
✓ 5	6/10/1984	Cow Mountain Trail Run	82,08	×1
✓ 6	15/1/2011	31st Avalon Benefit 50-Mile Run	80,47	×1
✓ 7	16/1/2010	30th Avalon Benefit 50-Mile Run	80,47	×1
✓ 8	17/1/2009	29th Avalon Benefit 50-Mile Run	80,47	×1
✓ 9	12/1/2008	28th Avalon Benefit 50-Mile Run	80,47	×1
✓ 10	13/1/2007	27th Avalon Benefit 50-Mile Run	80,47	×1
✓ 11	14/1/2006	26th Avalon Benefit 50-Mile Run	80,47	×1
✓ 12	2/4/2005	25th Avalon Benefit 50-Mile Run	80,47	×1
✓ 13	10/1/2004	24th Avalon Benefit 50-Mile Run	80,47	×1
✓ 14	11/1/2003	23rd Avalon Benefit 50-Mile Run	80,47	×1
✓ 15	12/1/2002	22nd Avalon Benefit 50-Mile Run	80,47	×1
✓ 16	13/1/2001	21st Avalon Benefit 50-Mile Run	80,47	×1
✓ 17	9/1/1999	19th Avalon Benefit 50-Mile Run	80,47	×1
✓ 18	10/1/1998	18th Avalon Benefit 50-Mile Run	80,47	×1
✓ 19	11/1/1997	17th Avalon Benefit 50-Mile Run	80,47	×1
✓ 20	6/1/1996	16th Avalon Benefit 50-Mile Run	80,47	×1
✓ 21	7/1/1995	15th Avalon Benefit 50-Mile Run	80,47	×1
✓ 22	8/1/1994	14th Avalon Benefit 50-Mile Run	80,47	×1
✓ 23	9/1/1993	13th Avalon Benefit 50-Mile Run	80,47	×1
✓ 24	11/1/1992	12th Avalon Benefit 50-Mile Run	80,47	×1
✓ 25	5/1/1991	11th Avalon Benefit 50-Mile Run	80,47	×1
✓ 26	6/1/1990	10th Avalon Benefit 50-Mile Run	80,47	×1
✓ 27	16/11/1986	3rd San Juan Trail 50 Mile	80,47	×1
✓ 28	4/1/1986	6th Avalon Benefit 50-Mile Run	80,47	×1
✓ 29	5/1/1985	5th Avalon Benefit 50-Mile Run	80,47	×1
✓ 30	8/9/1984	Drake's Bay 50 Mile Run	80,47	×1
✓ 31	2/6/1984	Nugget 50 Mile Trail Run	80,47	×1
✓ 32	15/4/1984	5th American River 50 Mile Endurance Run	80,47	×1
✓ 33	8/10/1983	Cow Mountain Planet Earth Run	78,21	×1
✓ 34	4/12/2011	25th OTHTC High Desert 50K Ultra	50,00	×1
✓ 35	11/9/1999	8th Bulldog 50k Ultra Run	50,00	×1
✓ 36	6/9/1997	6th Bulldog 50k Ultra Run	50,00	×1
✓ 37	13/4/1991	Cuyamaca 50 km Trail Race	50,00	×1
✓ 38	4/8/1985	4th Skyline 50k Endurance Run	50,00	×1
✓ 39	25/2/1984	Royal Bricker/Gym Bag 50 km Run	50,00	×1
✓ 40	8/5/1982	Royal Bricker/Gym Bag 50 km Run	50,00	×1