Ephraim Romesberg

Born : 1930 Cat. M95 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

54,1%

Rank quotient ?This runner's calculation uses 90 eligible race(s): Σ(rank − 1) = 7 124; Σ finishers = 13 167. 7 124 / 13 167 × 100 = 54.10%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed90

Km — ultra races8 074 km

> 100 km19

> 160 km15

> 200 km3

> 24h2

> 48h1

Longest race548,8 km

1st Gibson Ranch 6-Day Classic — 29/12/1990

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road31,0%

Trail69,0%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 31

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

50 km4h18'45 100 km12h43'19 50 mi6h14'50 100 mi26h34'33 12 h105,01 km 24 h161,34 km 6 d548,79 km

HISTORY

90 race(s) · 4 split(s) nested

Date		Race	Perf.	Rk
2008
11.10	50mi	9th Heartland 50 Mile Race	12:59:29 h	31
2007
25.08	50mi	3rd Lean Horse Ultra-Marathon 50 Mile	13:09:00 h	33
16.06	50km	5th Santa Cruz Mountains 50 km	8:48:26 h	58
2006
10.11	100mi	1st Mother Road 100 Mile	27:58:16 h	94
03.06	50km	17th Shadow of the Giants 50K	8:45:42 h	78
13.05	50km	23rd Quicksilver 50 km Endurance Run	7:38:04 h	57
2005
04.09	50km	11th Run On The Sly 50 km	7:46:10 h	54
16.07	50km	3rd Santa Cruz Mountains 50 km	7:47:15 h	18
07.05	50km	22nd Quicksilver 50 km Endurance Run	7:09:36 h	55
26.02	50km	1st Sequoia Trail Run	8:24:48 h	36
2004
05.09	50km	10th Run On The Sly 50 km	7:32:27 h	55
17.07	50km	2nd Santa Cruz Mountains 50 km	7:51:19 h	23
08.05	50km	21st Quicksilver 50 km Endurance Run	7:12:15 h	59
13.03	50km	15th Way Too Cool 50K Endurance Run	7:37:40 h	451
2003
31.08	50km	9th Run On The Sly 50 km	6:53:48 h	47
10.05	50km	20th Quicksilver 50 km Endurance Run	6:40:30 h	45
22.03	50km	1st Rucky Chucky Roundabout 50K	7:49:22 h	80
08.02	50km	25th Jed Smith Ultra Classic - 50 km Race	5:51:34 h	75
2002
11.05	50mi	19th Quicksilver 50 Mile Endurance Run	11:33:41 h	35
06.04	50mi	23rd American River 50 Mile Endurance Run	11:30:55 h	361
09.02	50km	24th Jed Smith Ultra Classic - 50 km Race	5:36:26 h	47
2001
12.05	50km	18th Quicksilver 50 km Endurance Run	6:31:42 h	57
2000
11.11	50mi	5th Helen Klein Ultra Classic 50mi	10:07:16 h	41
13.05	50km	17th Quicksilver 50 km Endurance Run	6:39:01 h	72
22.04	100km	14th Ruth Anderson Ultra 100km	12:43:19 h	18
1999
15.07	135mi	13th Badwater Ultramarathon	2d 05:10:00 h	29
10.04	50mi	20th American River 50 Mile Endurance Run	10:59:30 h	426
13.03	50km	10th Way Too Cool 50K Endurance Run	6:23:57 h	322
1998
28.11	28mi	14th Quad Dipsea Trail Run	7:23:23 h	168
10.10	50mi	16th Dick Collins Firetrails 50 Mile	11:22:05 h	71
16.07	135mi	12th Badwater Ultramarathon	2d 05:31:00 h	14
17.05	50km	11th Ohlone 50K Wilderness Run	6:57:35 h	55
04.04	50mi	19th American River 50 Mile Endurance Run	9:44:14 h	263
1997
27.09	50km	3rd Cle Elum Ridge 50k	7:32:50 h	77
05.09	100mi	18th Wasatch Front 100 Mile	35:23:00 h	115
16.08	100mi	15th Leadville Trail 100 Mile	29:32:57 h	127
28.06	100mi	24th Western States 100 Mile Endurance Run	29:45:10 h	249
31.05	100mi	19th Old Dominion 100 Mile Endurance Run	27:06:55 h	50
10.05	50mi	14th Quicksilver 50 Mile Endurance Run	10:43:06 h	28
18.01	50mi	19th Jed Smith Ultra Classic - 50 Mile Race	9:34:47 h	19
1996
16.11	50mi	1st Helen Klein Ultra Classic 50mi	9:22:44 h	41
24.08	100mi	14th Leadville Trail 100 Mile	29:48:06 h	151
11.05	50mi	13th Quicksilver 50 Mile Endurance Run	11:40:05 h	39
06.04	50mi	17th American River 50 Mile Endurance Run	10:51:17 h	339
03.02	50km	18th Jed Smith Ultra Classic - 50 km Race	4:45:12 h	62
1995
25.11	28mi	11th Quad Dipsea Trail Run	6:41:31 h	125
14.10	50mi	13th Dick Collins Firetrails 50 Mile	10:36:49 h	44
06.08	50km	14th Skyline 50k Endurance Run	5:42:32 h	74
01.04	50mi	16th American River 50 Mile Endurance Run	9:12:39 h	203
18.03	12h	12th Redwood Empire 12 Hour Run	105.009 km	6
18.03	50mi	12th Redwood Empire 12 Hour Run - 50mi Split	8:46:38 h	6
1994
23.07	100mi	6th Vermont 100 Mile Endurance Race	26:34:33 h	94
07.05	50mi	11th Quicksilver 50 Mile Endurance Run	11:40:22 h	50
02.04	50mi	15th American River 50 Mile Endurance Run	8:59:12 h	197
1993
26.06	100mi	20th Western States 100 Mile Endurance Run	28:37:41 h	140
08.05	50km	10th Quicksilver 50 km Endurance Run	5:41:55 h	43
13.03	50km	4th Way Too Cool 50K Endurance Run	5:29:08 h	117
06.02	50km	15th Jed Smith Ultra Classic - 50 km Race	4:37:32 h	38
30.01	50mi	7th Ledson Marsh 50 Mile	8:47:30 h	9
1991
17.08	100mi	9th Leadville Trail 100 Mile	28:45:51 h	97
11.05	50mi	8th Quicksilver 50 Mile Endurance Run	9:45:12 h	19
06.04	50mi	12th American River 50 Mile Endurance Run	8:40:36 h	124
09.02	50mi	13th Jed Smith Ultra Classic - 50 Mile Race	7:47:26 h	37
1990
29.12	6d	1st Gibson Ranch 6-Day Classic	548.786 km	9
15.09	50km	Pacific Crest Trail 50 km	6:54:28 h	46
11.02	50mi	12th Jed Smith Ultra Classic - 50 Mile Race	7:49:19 h	44
1988
17.09	50km	Pacific Crest Trail 50 km	6:31:11 h	33
25.06	100mi	15th Western States 100 Mile Endurance Run	27:28:30 h	168
10.04	50mi	9th American River 50 Mile Endurance Run	8:40:42 h	57
1987
20.09	50km	Pacific Crest Trail 50 km	7:21:32 h	68
07.02	50km	9th Jed Smith Ultra Classic - 50 km Race	7:25:53 h	27
1986
28.09	38mi	Dam Tough Run	5:21:22 h	7
28.06	100mi	13th Western States 100 Mile Endurance Run	28:52:40 h	175
22.03	24h	3rd Redwood Empire 24 Hour Run	161.336 km	18
22.03	50mi	3rd Redwood Empire 24 Hour Run - 50mi Split	8:04:56 h	9
22.03	100km	3rd Redwood Empire 24 Hour Run - 100km Split	10:14:35 h	4
22.03	100mi	3rd Redwood Empire 24 Hour Run - 100mi Split	18:50:40 h	5
08.02	50mi	8th Jed Smith Ultra Classic - 50 Mile Race	7:04:51 h	10
1985
11.05	50mi	2nd Quicksilver 50 Mile Endurance Run	8:17:05 h	9
14.04	50mi	6th American River 50 Mile Endurance Run	7:55:19 h	29
1984
05.08	50km	3rd Skyline 50k Endurance Run	4:51:11 h	59
23.06	93.5mi	11th Western States 100 Mile Endurance Run	22:11:00 h	67
12.05	50mi	1st Quicksilver 50 Mile Endurance Run	7:34:30 h	2 🥈
15.04	50mi	5th American River 50 Mile Endurance Run	7:21:42 h	27
11.02	50mi	6th Jed Smith Ultra Classic - 50 Mile Race	7:26:40 h	22
1983
16.09	72mi	8th Lake Tahoe 72 Miler	13:26:23 h	20
07.08	50km	2nd Skyline 50k Endurance Run	5:11:28 h	36
25.06	93.5mi	10th Western States 100 Mile Endurance Run	26:00:00 h	126
28.05	50mi	Donner Trail 50 Miler	10:18:00 h	14
17.04	50mi	4th American River 50 Mile Endurance Run	7:06:59 h	31
1982
01.08	50km	1st Skyline 50k Endurance Run	4:18:45 h	40
24.04	50mi	Skagit Valley 50 Miler	6:14:50 h	5
18.04	50mi	3rd American River 50 Mile Endurance Run	7:09:02 h	14
14.02	50mi	5th Jed Smith Ultra Classic - 50 Mile Race	6:25:20 h	9

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	29/12/1990	1st Gibson Ranch 6-Day Classic	548,79	×7
✓ 2	15/7/1999	13th Badwater Ultramarathon	217,26	×2
✓ 3	16/7/1998	12th Badwater Ultramarathon	217,26	×2
✓ 4	22/3/1986	3rd Redwood Empire 24 Hour Run	161,34	×2
✓ 5	10/11/2006	1st Mother Road 100 Mile	160,93	×2
✓ 6	5/9/1997	18th Wasatch Front 100 Mile	160,93	×2
✓ 7	16/8/1997	15th Leadville Trail 100 Mile	160,93	×2
✓ 8	28/6/1997	24th Western States 100 Mile Endurance Run	160,93	×2
✓ 9	31/5/1997	19th Old Dominion 100 Mile Endurance Run	160,93	×2
✓ 10	24/8/1996	14th Leadville Trail 100 Mile	160,93	×2
✓ 11	23/7/1994	6th Vermont 100 Mile Endurance Race	160,93	×2
✓ 12	26/6/1993	20th Western States 100 Mile Endurance Run	160,93	×2
✓ 13	17/8/1991	9th Leadville Trail 100 Mile	160,93	×2
✓ 14	25/6/1988	15th Western States 100 Mile Endurance Run	160,93	×2
✓ 15	28/6/1986	13th Western States 100 Mile Endurance Run	160,93	×2
✓ 16	23/6/1984	11th Western States 100 Mile Endurance Run	150,47	×2
✓ 17	25/6/1983	10th Western States 100 Mile Endurance Run	150,47	×2
✓ 18	16/9/1983	8th Lake Tahoe 72 Miler	115,87	×1
✓ 19	18/3/1995	12th Redwood Empire 12 Hour Run	105,01	×1
✓ 20	22/4/2000	14th Ruth Anderson Ultra 100km	100,00	×1
✓ 21	11/10/2008	9th Heartland 50 Mile Race	80,47	×1
✓ 22	25/8/2007	3rd Lean Horse Ultra-Marathon 50 Mile	80,47	×1
✓ 23	11/5/2002	19th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 24	6/4/2002	23rd American River 50 Mile Endurance Run	80,47	×1
✓ 25	11/11/2000	5th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 26	10/4/1999	20th American River 50 Mile Endurance Run	80,47	×1
✓ 27	10/10/1998	16th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 28	4/4/1998	19th American River 50 Mile Endurance Run	80,47	×1
✓ 29	10/5/1997	14th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 30	18/1/1997	19th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 31	16/11/1996	1st Helen Klein Ultra Classic 50mi	80,47	×1
✓ 32	11/5/1996	13th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 33	6/4/1996	17th American River 50 Mile Endurance Run	80,47	×1
✓ 34	14/10/1995	13th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 35	1/4/1995	16th American River 50 Mile Endurance Run	80,47	×1
✓ 36	7/5/1994	11th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 37	2/4/1994	15th American River 50 Mile Endurance Run	80,47	×1
✓ 38	30/1/1993	7th Ledson Marsh 50 Mile	80,47	×1
✓ 39	11/5/1991	8th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 40	6/4/1991	12th American River 50 Mile Endurance Run	80,47	×1
✓ 41	9/2/1991	13th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 42	11/2/1990	12th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 43	10/4/1988	9th American River 50 Mile Endurance Run	80,47	×1
✓ 44	8/2/1986	8th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 45	11/5/1985	2nd Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 46	14/4/1985	6th American River 50 Mile Endurance Run	80,47	×1
✓ 47	12/5/1984	1st Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 48	15/4/1984	5th American River 50 Mile Endurance Run	80,47	×1
✓ 49	11/2/1984	6th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 50	28/5/1983	Donner Trail 50 Miler	80,47	×1
✓ 51	17/4/1983	4th American River 50 Mile Endurance Run	80,47	×1
✓ 52	24/4/1982	Skagit Valley 50 Miler	80,47	×1
✓ 53	18/4/1982	3rd American River 50 Mile Endurance Run	80,47	×1
✓ 54	14/2/1982	5th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 55	28/9/1986	Dam Tough Run	61,16	—
56	16/6/2007	5th Santa Cruz Mountains 50 km	50,00	—
57	3/6/2006	17th Shadow of the Giants 50K	50,00	—
58	13/5/2006	23rd Quicksilver 50 km Endurance Run	50,00	—
59	4/9/2005	11th Run On The Sly 50 km	50,00	—
60	16/7/2005	3rd Santa Cruz Mountains 50 km	50,00	—
61	7/5/2005	22nd Quicksilver 50 km Endurance Run	50,00	—
62	26/2/2005	1st Sequoia Trail Run	50,00	—
63	5/9/2004	10th Run On The Sly 50 km	50,00	—
64	17/7/2004	2nd Santa Cruz Mountains 50 km	50,00	—
65	8/5/2004	21st Quicksilver 50 km Endurance Run	50,00	—
66	13/3/2004	15th Way Too Cool 50K Endurance Run	50,00	—
67	31/8/2003	9th Run On The Sly 50 km	50,00	—
68	10/5/2003	20th Quicksilver 50 km Endurance Run	50,00	—
69	22/3/2003	1st Rucky Chucky Roundabout 50K	50,00	—
70	8/2/2003	25th Jed Smith Ultra Classic - 50 km Race	50,00	—
71	9/2/2002	24th Jed Smith Ultra Classic - 50 km Race	50,00	—
72	12/5/2001	18th Quicksilver 50 km Endurance Run	50,00	—
73	13/5/2000	17th Quicksilver 50 km Endurance Run	50,00	—
74	13/3/1999	10th Way Too Cool 50K Endurance Run	50,00	—
75	17/5/1998	11th Ohlone 50K Wilderness Run	50,00	—
76	27/9/1997	3rd Cle Elum Ridge 50k	50,00	—
77	3/2/1996	18th Jed Smith Ultra Classic - 50 km Race	50,00	—
78	6/8/1995	14th Skyline 50k Endurance Run	50,00	—
79	8/5/1993	10th Quicksilver 50 km Endurance Run	50,00	—
80	13/3/1993	4th Way Too Cool 50K Endurance Run	50,00	—
81	6/2/1993	15th Jed Smith Ultra Classic - 50 km Race	50,00	—
82	15/9/1990	Pacific Crest Trail 50 km	50,00	—
83	17/9/1988	Pacific Crest Trail 50 km	50,00	—
84	20/9/1987	Pacific Crest Trail 50 km	50,00	—
85	7/2/1987	9th Jed Smith Ultra Classic - 50 km Race	50,00	—
86	5/8/1984	3rd Skyline 50k Endurance Run	50,00	—
87	7/8/1983	2nd Skyline 50k Endurance Run	50,00	—
88	1/8/1982	1st Skyline 50k Endurance Run	50,00	—
89	28/11/1998	14th Quad Dipsea Trail Run	45,06	—
90	25/11/1995	11th Quad Dipsea Trail Run	45,06	—