Frederick Liebes

Born : 1946 Cat. M80 Ultrarunner since 1991

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

50,6%

Rank quotient ?This runner's calculation uses 73 eligible race(s): Σ(rank − 1) = 6 370; Σ finishers = 12 600. 6 370 / 12 600 × 100 = 50.56%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed73

Km — ultra races4 696 km

> 100 km3

> 160 km3

Longest race160,9 km

23rd Western States 100 Mile Endurance Run — 29/6/1996

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road2,1%

Trail97,9%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 30

🏅 Top 3 M1

Longest winning streak0

Current streak0

Records

50 km4h30'05 100 km11h50'36 50 mi7h58'44 100 mi26h59'32

HISTORY

73 race(s)

Date		Race	Perf.	Rk
2014
23.08	31.5mi	15th Tamalpa Headlands 50K	8:38:57 h	178
10.05	50km	31st Quicksilver 50 km Endurance Run	7:39:04 h	102
2013
18.08	50km	18th Run On The Sly 50 km	8:04:28 h	77
2012
27.10	50km	13th Whiskeytown 50km Trail Run	8:51:32 h	48
2010
27.11	28mi	26th Quad Dipsea Trail Run	7:55:25 h	183
13.03	34Miles	1st Uncool 34 Miles	9:42:00 h	8
2006
25.11	28mi	22nd Quad Dipsea Trail Run	7:11:02 h	176
2005
26.11	28mi	21st Quad Dipsea Trail Run	7:06:53 h	167
15.10	50mi	23rd Dick Collins Firetrails 50 Mile	10:43:13 h	89
24.09	53.2mi	19th Sierra Nevada Endurance 53 Mile Run	12:21:27 h	33
27.08	31.5mi	8th Tamalpa Headlands 50K	6:54:36 h	120
2004
27.11	28mi	20th Quad Dipsea Trail Run	7:09:37 h	144
01.05	100km	9th Miwok 100k Trail race	14:59:49 h	177
03.04	50mi	25th American River 50 Mile Endurance Run	10:04:13 h	213
07.02	50km	26th Jed Smith Ultra Classic - 50 km Race	4:48:33 h	31
2003
29.11	28mi	19th Quad Dipsea Trail Run	6:01:37 h	93
23.08	31.5mi	6th Tamalpa Headlands 50K	6:42:02 h	126
2001
24.11	28mi	17th Quad Dipsea Trail Run	7:33:38 h	146
13.10	50mi	19th Dick Collins Firetrails 50 Mile	11:09:32 h	73
15.09	53.2mi	15th Sierra Nevada Endurance 53 Mile Run	12:53:54 h	15
02.09	50km	7th Run On The Sly 50 km	6:02:14 h	23
25.08	31.5mi	4th Tamalpa Headlands 50K	6:53:45 h	131
05.05	100km	6th Miwok 100k Trail race	13:45:44 h	107
10.03	50km	12th Way Too Cool 50K Endurance Run	6:03:41 h	262
2000
25.11	28mi	16th Quad Dipsea Trail Run	7:12:21 h	166
11.03	50km	11th Way Too Cool 50K Endurance Run	6:37:09 h	326
1999
27.11	28mi	15th Quad Dipsea Trail Run	6:35:02 h	121
1998
29.08	31.5mi	1st Tamalpa Headlands 50K	6:41:53 h	71
01.08	50km	17th Skyline 50k Endurance Run	7:34:37 h	204
13.06	50km	1st Best Run By A Dam Site	6:38:19 h	37
02.05	100km	3rd Miwok 100k Trail race	14:22:35 h	81
14.03	50km	9th Way Too Cool 50K Endurance Run	6:04:33 h	194
1997
29.11	28mi	13th Quad Dipsea Trail Run	6:57:50 h	147
25.10	52.4mi	11th Sierra Nevada Endurance 52 Mile Run	11:33:11 h	80
20.10	50mi	15th Dick Collins Firetrails 50 Mile	10:42:51 h	57
13.09	50mi	10th McKenzie River 50 Mile Trail Run	10:47:15 h	24
31.08	50km	3rd Run On The Sly 50 km	6:20:47 h	22
02.08	50km	16th Skyline 50k Endurance Run	5:28:40 h	75
15.03	50km	8th Way Too Cool 50K Endurance Run	5:29:51 h	154
1996
30.11	28mi	12th Quad Dipsea Trail Run	5:42:08 h	61
26.10	52.4mi	10th Sierra Nevada Endurance 52 Mile Run	9:29:10 h	16
22.09	50km	Down and Up Ruck-a-Chuck	6:00:35 h	12
01.09	50mi	2nd Run On The Sly 50 Mile	8:24:04 h	9
03.08	50km	15th Skyline 50k Endurance Run	5:00:26 h	31
29.06	100mi	23rd Western States 100 Mile Endurance Run	26:59:32 h	112
11.05	50mi	13th Quicksilver 50 Mile Endurance Run	11:14:32 h	30
05.05	100km	1st Miwok 100k Trail race	11:50:36 h	17
09.03	50km	7th Way Too Cool 50K Endurance Run	5:24:16 h	112
03.02	50km	18th Jed Smith Ultra Classic - 50 km Race	4:30:05 h	51
1995
25.11	28mi	11th Quad Dipsea Trail Run	5:51:48 h	69
28.10	52.4mi	9th Sierra Nevada Endurance 52 Mile Run	13:17:15 h	79
03.09	50km	1st Run On The Sly 50 km	7:15:22 h	39
02.09	50km	1st Point Reyes 50K	6:15:25 h	84
06.08	50km	14th Skyline 50k Endurance Run	5:21:35 h	52
24.06	100mi	22nd Western States 100 Mile Endurance Run	29:09:30 h	139
01.04	50mi	16th American River 50 Mile Endurance Run	8:45:04 h	141
11.03	50km	6th Way Too Cool 50K Endurance Run	5:22:44 h	91
1994
26.11	28mi	10th Quad Dipsea Trail Run	5:44:56 h	56
08.10	50mi	12th Dick Collins Firetrails 50 Mile	9:06:10 h	17
07.08	50km	13th Skyline 50k Endurance Run	5:00:08 h	32
12.03	50km	5th Way Too Cool 50K Endurance Run	5:30:59 h	141
1993
23.10	52.4mi	7th Sierra Nevada Endurance 52 Mile Run	10:11:25 h	26
09.10	50mi	11th Dick Collins Firetrails 50 Mile	9:27:10 h	34
01.08	50km	12th Skyline 50k Endurance Run	5:38:03 h	49
26.06	100mi	20th Western States 100 Mile Endurance Run	27:26:15 h	107
03.04	50mi	14th American River 50 Mile Endurance Run	7:58:44 h	76
13.03	50km	4th Way Too Cool 50K Endurance Run	4:57:50 h	57
1992
28.11	28mi	8th Quad Dipsea Trail Run	5:27:32 h	32
10.10	50mi	10th Dick Collins Firetrails 50 Mile	9:51:59 h	21
19.09	50km	Pacific Crest Trail 50 km	6:32:31 h	32
02.08	50km	11th Skyline 50k Endurance Run	5:02:41 h	21
14.03	50km	3rd Way Too Cool 50K Endurance Run	5:03:34 h	71
1991
30.11	28mi	7th Quad Dipsea Trail Run	5:43:14 h	45

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	29/6/1996	23rd Western States 100 Mile Endurance Run	160,93	×3
✓ 2	24/6/1995	22nd Western States 100 Mile Endurance Run	160,93	×3
✓ 3	26/6/1993	20th Western States 100 Mile Endurance Run	160,93	×3
✓ 4	1/5/2004	9th Miwok 100k Trail race	100,00	×2
✓ 5	5/5/2001	6th Miwok 100k Trail race	100,00	×2
✓ 6	2/5/1998	3rd Miwok 100k Trail race	100,00	×2
✓ 7	5/5/1996	1st Miwok 100k Trail race	100,00	×2
✓ 8	24/9/2005	19th Sierra Nevada Endurance 53 Mile Run	85,62	×1
✓ 9	15/9/2001	15th Sierra Nevada Endurance 53 Mile Run	85,62	×1
✓ 10	25/10/1997	11th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 11	26/10/1996	10th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 12	28/10/1995	9th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 13	23/10/1993	7th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 14	15/10/2005	23rd Dick Collins Firetrails 50 Mile	80,47	×1
✓ 15	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 16	13/10/2001	19th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 17	20/10/1997	15th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 18	13/9/1997	10th McKenzie River 50 Mile Trail Run	80,47	×1
✓ 19	1/9/1996	2nd Run On The Sly 50 Mile	80,47	×1
✓ 20	11/5/1996	13th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 21	1/4/1995	16th American River 50 Mile Endurance Run	80,47	×1
✓ 22	8/10/1994	12th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 23	9/10/1993	11th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 24	3/4/1993	14th American River 50 Mile Endurance Run	80,47	×1
✓ 25	10/10/1992	10th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 26	13/3/2010	1st Uncool 34 Miles	54,72	×1
✓ 27	23/8/2014	15th Tamalpa Headlands 50K	50,69	×1
✓ 28	27/8/2005	8th Tamalpa Headlands 50K	50,69	×1
✓ 29	23/8/2003	6th Tamalpa Headlands 50K	50,69	×1
✓ 30	25/8/2001	4th Tamalpa Headlands 50K	50,69	×1
✓ 31	29/8/1998	1st Tamalpa Headlands 50K	50,69	×1
✓ 32	10/5/2014	31st Quicksilver 50 km Endurance Run	50,00	×1
✓ 33	18/8/2013	18th Run On The Sly 50 km	50,00	×1
✓ 34	27/10/2012	13th Whiskeytown 50km Trail Run	50,00	×1
✓ 35	7/2/2004	26th Jed Smith Ultra Classic - 50 km Race	50,00	×1
✓ 36	2/9/2001	7th Run On The Sly 50 km	50,00	×1
✓ 37	10/3/2001	12th Way Too Cool 50K Endurance Run	50,00	×1
✓ 38	11/3/2000	11th Way Too Cool 50K Endurance Run	50,00	×1
✓ 39	1/8/1998	17th Skyline 50k Endurance Run	50,00	×1
✓ 40	13/6/1998	1st Best Run By A Dam Site	50,00	×1
✓ 41	14/3/1998	9th Way Too Cool 50K Endurance Run	50,00	×1
✓ 42	31/8/1997	3rd Run On The Sly 50 km	50,00	×1
✓ 43	2/8/1997	16th Skyline 50k Endurance Run	50,00	×1
✓ 44	15/3/1997	8th Way Too Cool 50K Endurance Run	50,00	×1
✓ 45	22/9/1996	Down and Up Ruck-a-Chuck	50,00	×1
✓ 46	3/8/1996	15th Skyline 50k Endurance Run	50,00	×1
✓ 47	9/3/1996	7th Way Too Cool 50K Endurance Run	50,00	×1
✓ 48	3/2/1996	18th Jed Smith Ultra Classic - 50 km Race	50,00	×1
✓ 49	3/9/1995	1st Run On The Sly 50 km	50,00	×1
✓ 50	2/9/1995	1st Point Reyes 50K	50,00	×1
51	6/8/1995	14th Skyline 50k Endurance Run	50,00	×1
52	11/3/1995	6th Way Too Cool 50K Endurance Run	50,00	×1
53	7/8/1994	13th Skyline 50k Endurance Run	50,00	×1
54	12/3/1994	5th Way Too Cool 50K Endurance Run	50,00	×1
55	1/8/1993	12th Skyline 50k Endurance Run	50,00	×1
56	13/3/1993	4th Way Too Cool 50K Endurance Run	50,00	×1
57	19/9/1992	Pacific Crest Trail 50 km	50,00	×1
58	2/8/1992	11th Skyline 50k Endurance Run	50,00	×1
59	14/3/1992	3rd Way Too Cool 50K Endurance Run	50,00	×1
60	27/11/2010	26th Quad Dipsea Trail Run	45,06	—
61	25/11/2006	22nd Quad Dipsea Trail Run	45,06	—
62	26/11/2005	21st Quad Dipsea Trail Run	45,06	—
63	27/11/2004	20th Quad Dipsea Trail Run	45,06	—
64	29/11/2003	19th Quad Dipsea Trail Run	45,06	—
65	24/11/2001	17th Quad Dipsea Trail Run	45,06	—
66	25/11/2000	16th Quad Dipsea Trail Run	45,06	—
67	27/11/1999	15th Quad Dipsea Trail Run	45,06	—
68	29/11/1997	13th Quad Dipsea Trail Run	45,06	—
69	30/11/1996	12th Quad Dipsea Trail Run	45,06	—
70	25/11/1995	11th Quad Dipsea Trail Run	45,06	—
71	26/11/1994	10th Quad Dipsea Trail Run	45,06	—
72	28/11/1992	8th Quad Dipsea Trail Run	45,06	—
73	30/11/1991	7th Quad Dipsea Trail Run	45,06	—