Karen Guenther

Born : 1959 Cat. W65 Ultrarunner since 2004

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

76,6%

Rank quotient ?This runner's calculation uses 42 eligible race(s): Σ(rank − 1) = 4 140; Σ finishers = 5 406. 4 140 / 5 406 × 100 = 76.58%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed42

Km — ultra races3 013 km

> 100 km4

> 160 km3

> 24h3

Longest race166,0 km

23rd Across the Years, 24h — 31/12/2005

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road18,0%

Trail82,0%

Wins & podiums (ultra)

🏆 Win0

🏆 Win F0

🏅 Top 30

🏅 Top 3 F1

Longest winning streak0

Current streak0

Records

50 km6h08'57 100 km14h07'02 50 mi9h55'41 100 mi28h24'38 12 h81,92 km 24 h166,00 km

HISTORY

42 race(s)

Date		Race	Perf.	Rk
2008
25.10	12h	3rd San Francisco One Day, 12h	77.248 km	33
2007
20.10	24h	2nd San Francisco One Day, 24h	81.915 km	40
21.07	50km	6th Tahoe Rim Trail 50km Endurance Runs	9:45:36 h	126
20.05	50km	20th Ohlone 50K Wilderness Run	9:42:35 h	132
14.04	50mi	28th American River 50 Mile Endurance Run	12:06:22 h	431
24.03	50km	6th Pirates Cove Trail Run	7:32:57 h	65
17.02	50km	3rd Sequoia Trail Run	8:13:51 h	49
2006
31.12	24h	24th Across the Years, 24h	134.500 km	15
28.10	12h	1st San Francisco One Day, 12h	81.915 km	15
27.08	50km	1st Redwood Park 50K Trail Run	8:01:54 h	30
26.08	31.5mi	9th Tamalpa Headlands 50K	7:21:34 h	137
29.07	50mi	8th Mt. Hood 50 Mile Trail Run	12:25:25 h	98
06.05	100km	11th Miwok 100k Trail race	15:03:06 h	199
01.04	50mi	27th American River 50 Mile Endurance Run	11:26:08 h	333
2005
31.12	24h	23rd Across the Years, 24h	166.000 km	10
26.11	28mi	21st Quad Dipsea Trail Run	7:12:40 h	170
05.11	50mi	10th Helen Klein Ultra Classic 50mi	9:55:41 h	70
24.09	100mi	6th Rio Del Lago 100 Mile	28:24:38 h	28
04.09	50mi	11th Run On The Sly 50 Mile	12:10:23 h	50
07.08	50km	24th Skyline 50k Endurance Run	6:28:48 h	87
16.07	50mi	4th Tahoe Rim Trail 50M Endurance Runs	13:56:32 h	89
11.06	50mi	2nd Capitol Peak 50 Miler	13:50:00 h	30
07.05	50mi	22nd Quicksilver 50 Mile Endurance Run	11:16:51 h	68
02.04	50mi	26th American River 50 Mile Endurance Run	10:55:20 h	305
20.03	50km	4th Stevens Creek Striders 50K	8:14:20 h	55
19.03	50km	3rd Rucky Chucky Roundabout 50K	7:48:26 h	86
01.01	50km	3rd Angel Island 50k	6:42:20 h	15
2004
18.12	50km	Muir Beach Trail Run	8:05:01 h	21
27.11	28mi	20th Quad Dipsea Trail Run	7:51:22 h	185
18.09	100mi	5th Rio Del Lago 100 Mile	28:54:52 h	20
22.08	50km	1st Salt Point Trail Run	8:01:50 h	6
21.08	31.5mi	7th Tamalpa Headlands 50K	7:02:13 h	88
07.08	50km	3rd Big Basin Redwoods Trail Run	7:30:24 h	15
01.08	50km	23rd Skyline 50k Endurance Run	6:08:57 h	86
19.06	50km	2nd Skyline Ridge Trail Run	6:54:34 h	30
05.06	50km	4th Mount Diablo 50K	8:02:38 h	23
01.05	100km	9th Miwok 100k Trail race	14:07:02 h	144
03.04	50mi	25th American River 50 Mile Endurance Run	10:54:59 h	303
13.03	50km	15th Way Too Cool 50K Endurance Run	6:49:50 h	380
07.02	50km	3rd Woodside Trail Run 50K	7:18:54 h	71
10.01	53km	25th Epiphany Ultras - The Popular But Wussy Metric	8:29:00 h	25
03.01	50km	2nd Angel Island 50k	6:32:50 h	19

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	31/12/2005	23rd Across the Years, 24h	166,00	×3
✓ 2	24/9/2005	6th Rio Del Lago 100 Mile	160,93	×3
✓ 3	18/9/2004	5th Rio Del Lago 100 Mile	160,93	×3
✓ 4	31/12/2006	24th Across the Years, 24h	134,50	×2
✓ 5	6/5/2006	11th Miwok 100k Trail race	100,00	×2
✓ 6	1/5/2004	9th Miwok 100k Trail race	100,00	×2
✓ 7	20/10/2007	2nd San Francisco One Day, 24h	81,92	×1
✓ 8	28/10/2006	1st San Francisco One Day, 12h	81,92	×1
✓ 9	14/4/2007	28th American River 50 Mile Endurance Run	80,47	×1
✓ 10	29/7/2006	8th Mt. Hood 50 Mile Trail Run	80,47	×1
✓ 11	1/4/2006	27th American River 50 Mile Endurance Run	80,47	×1
✓ 12	5/11/2005	10th Helen Klein Ultra Classic 50mi	80,47	×1
✓ 13	4/9/2005	11th Run On The Sly 50 Mile	80,47	×1
✓ 14	16/7/2005	4th Tahoe Rim Trail 50M Endurance Runs	80,47	×1
✓ 15	11/6/2005	2nd Capitol Peak 50 Miler	80,47	×1
✓ 16	7/5/2005	22nd Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 17	2/4/2005	26th American River 50 Mile Endurance Run	80,47	×1
✓ 18	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 19	25/10/2008	3rd San Francisco One Day, 12h	77,25	×1
✓ 20	10/1/2004	25th Epiphany Ultras - The Popular But Wussy Metric	53,00	×1
✓ 21	26/8/2006	9th Tamalpa Headlands 50K	50,69	×1
✓ 22	21/8/2004	7th Tamalpa Headlands 50K	50,69	×1
✓ 23	21/7/2007	6th Tahoe Rim Trail 50km Endurance Runs	50,00	×1
✓ 24	20/5/2007	20th Ohlone 50K Wilderness Run	50,00	×1
✓ 25	24/3/2007	6th Pirates Cove Trail Run	50,00	×1
✓ 26	17/2/2007	3rd Sequoia Trail Run	50,00	×1
✓ 27	27/8/2006	1st Redwood Park 50K Trail Run	50,00	×1
✓ 28	7/8/2005	24th Skyline 50k Endurance Run	50,00	×1
✓ 29	20/3/2005	4th Stevens Creek Striders 50K	50,00	×1
✓ 30	19/3/2005	3rd Rucky Chucky Roundabout 50K	50,00	×1
✓ 31	1/1/2005	3rd Angel Island 50k	50,00	×1
✓ 32	18/12/2004	Muir Beach Trail Run	50,00	×1
✓ 33	22/8/2004	1st Salt Point Trail Run	50,00	×1
✓ 34	7/8/2004	3rd Big Basin Redwoods Trail Run	50,00	×1
✓ 35	1/8/2004	23rd Skyline 50k Endurance Run	50,00	×1
✓ 36	19/6/2004	2nd Skyline Ridge Trail Run	50,00	×1
✓ 37	5/6/2004	4th Mount Diablo 50K	50,00	×1
✓ 38	13/3/2004	15th Way Too Cool 50K Endurance Run	50,00	×1
✓ 39	7/2/2004	3rd Woodside Trail Run 50K	50,00	×1
✓ 40	3/1/2004	2nd Angel Island 50k	50,00	×1
✓ 41	26/11/2005	21st Quad Dipsea Trail Run	45,06	—
✓ 42	27/11/2004	20th Quad Dipsea Trail Run	45,06	—