Jennifer Pfeifer

Born : 1971 Cat. W55 Ultrarunner since 1997

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

8,9%

Rank quotient ?This runner's calculation uses 77 eligible race(s): Σ(rank − 1) = 1 369; Σ finishers = 15 329. 1 369 / 15 329 × 100 = 8.93%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed77

Km — ultra races5 160 km

> 100 km4

> 160 km4

Longest race160,9 km

23rd Rocky Raccoon 100 Mile Trail Run - US Championchips — 31/1/2015

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road8,1%

Trail91,9%

Wins & podiums (ultra)

🏆 Win0

🏆 Win F34

🏅 Top 37

🏅 Top 3 F59

Longest winning streak0

Current streak0

Records

50 km3h35'06 100 km10h00'12 50 mi6h34'07 100 mi17h53'46 6 h66,84 km

HISTORY

77 race(s)

Date		Race	Perf.	Rk
2019
10.08	50mi	9th Cool Moon 50 Mile Endurance Run	10:46:00 h	7
04.05	50km	39th Wild Wild West 50k	7:28:39 h	17
20.04	50mi	Mokelumne River 50 Mile Trail Run	9:19:48 h	7
09.03	50km	8th Marin Ultra Challenge 50 km Race	5:46:43 h	77
2018
15.12	50km	7th Woodside Ramble 50K - Winter	5:03:33 h	20
17.03	50km	3rd Ruck a Chuck 50K	5:45:41 h	32
24.02	50km	4th Salmon Falls 50 km Race	4:56:08 h	21
2017
18.11	50mi	11th Endurance Challenge - California Trail 50 Mile	9:15:32 h	115
18.02	50km	5th FOURmidable 50K	5:13:01 h	24
07.01	50km	37th Avalon Benefit 50 km Run	4:36:09 h	4
01.01	50km	15th Woodside Trail Run 50K	4:45:45 h	10
2016
08.10	50mi	34th Dick Collins Firetrails 50 Mile	8:35:33 h	5
07.08	50km	35th Skyline 50k Endurance Run	4:46:22 h	20
14.05	50km	3rd Gold Rush 50k	4:44:21 h	9
09.04	50mi	8th Lake Sonoma 50 Mile Race	8:43:50 h	50
06.02	50km	38th Jed Smith Ultra Classic - 50 km Race	3:56:22 h	10
2015
02.05	100km	2nd The Canyons Endurance 100 km Run	14:26:24 h	20
11.04	50mi	7th Lake Sonoma 50 Mile Race	8:39:42 h	56
31.01	100mi	23rd Rocky Raccoon 100 Mile Trail Run - US Championchips	17:53:46 h	18
31.01	100mi	23rd Rocky Raccoon 100 Mile Trail Run	17:53:46 h	26
11.01	50km	5th Crystal Springs 50 km Winter Trail Run	4:39:51 h	7
2014
31.12	6h	5th New Years One Day 6 Hour Run	66.844 km	4
14.12	50km	3rd Woodside Ramble 50K - Winter	4:42:20 h	6
06.09	50km	3rd Lost Sierra Endurance Run	6:24:07 h	10
10.05	100km	2nd Gold Rush 100k	11:15:48 h	5
12.04	50mi	6th Lake Sonoma 50 Mile Race	8:26:12 h	45
08.03	50km	25th Way Too Cool 50K Endurance Run	4:14:13 h	38
2013
29.12	50km	12th Woodside Trail Run 50K	4:23:11 h	6
12.10	50km	5th Skyline to the Sea 50km	4:28:24 h	5
18.08	50km	18th Run On The Sly 50 km	4:46:12 h	9
11.05	100km	1st Gold Rush 100k	10:00:12 h	3 🥉
27.04	50km	4th Folsom Lake Trail Run - Spring 50K	4:14:17 h	3 🥉
09.03	50km	24th Way Too Cool 50K Endurance Run	4:14:10 h	35
2012
01.12	50mi	6th Endurance Challenge - California Trail 50 Mile	7:37:30 h	57
27.10	50km	7th Stinson Beach 50 km	5:12:00 h	4
23.06	100mi	39th Western States 100 Mile Endurance Run	21:31:20 h	68
14.04	50mi	4th Lake Sonoma 50 Mile Race	8:25:56 h	30
25.02	50km	2nd Chabot Trail Run	4:14:30 h	3 🥉
2011
26.11	28mi	27th Quad Dipsea Trail Run	5:19:00 h	37
21.08	50km	16th Run On The Sly 50 km	4:33:22 h	4
04.06	50km	4th Auburn Trail Run 50K	5:17:53 h	3 🥉
21.05	50km	26th Silver State 50 km	4:52:04 h	3 🥉
30.04	50km	28th Quicksilver 50 km Endurance Run	4:56:41 h	13
09.04	50mi	32nd American River 50 Mile Endurance Run	7:04:09 h	21
19.03	50km	3rd Diablo Trails Challenge	5:46:05 h	7
05.02	50km	33rd Jed Smith Ultra Classic - 50 km Race	3:45:39 h	5
23.01	50km	8th Pacifica 50 km Trail Run - Winter Edition	4:54:32 h	3 🥉
2009
10.05	50km	4th Redwood Park 50K Trail Run	4:47:37 h	4
04.04	50mi	30th American River 50 Mile Endurance Run	7:03:25 h	24
07.02	50km	8th Woodside Trail Run 50K	4:21:44 h	6
17.01	50km	6th Pacifica 50 km Trail Run - Winter Edition	5:05:45 h	6
2004
26.06	100mi	31th Western States 100 Mile Endurance Run	22:11:13 h	42
15.05	50mi	19th Silver State 50 Miles	9:12:40 h	9
01.05	100km	9th Miwok 100k Trail race	10:50:17 h	26
03.04	50mi	25th American River 50 Mile Endurance Run	7:00:13 h	6
13.03	50km	15th Way Too Cool 50K Endurance Run	4:33:21 h	44
2003
19.07	50km	3rd Tahoe Rim Trail 50km Endurance Runs	6:03:25 h	15
18.05	50km	16th Ohlone 50K Wilderness Run	5:43:45 h	13
17.05	50km	18th Silver State 50 km	6:29:11 h	6
05.04	50mi	24th American River 50 Mile Endurance Run	6:34:07 h	6
08.02	50km	25th Jed Smith Ultra Classic - 50 km Race	3:42:55 h	9
2002
06.04	50mi	23rd American River 50 Mile Endurance Run	6:45:12 h	7
09.02	50km	24th Jed Smith Ultra Classic - 50 km Race	3:42:33 h	6
2001
12.05	50mi	18th Quicksilver 50 Mile Endurance Run	8:19:30 h	6
07.04	50mi	22nd American River 50 Mile Endurance Run	6:49:54 h	8
2000
25.11	28mi	16th Quad Dipsea Trail Run	5:21:02 h	39
12.02	50km	22nd Jed Smith Ultra Classic - 50 km Race	3:38:05 h	6
1999
10.04	50mi	20th American River 50 Mile Endurance Run	6:52:47 h	19
13.03	50km	10th Way Too Cool 50K Endurance Run	4:19:59 h	29
27.02	100km	3rd Catalina 100K Trail Run	10:09:23 h	7
13.02	50km	21st Jed Smith Ultra Classic - 50 km Race	3:35:06 h	6
1998
06.09	50mi	4th Run On The Sly 50 Mile	7:18:15 h	2 🥈
01.08	50km	17th Skyline 50k Endurance Run	4:35:16 h	14
1997
02.08	50km	16th Skyline 50k Endurance Run	4:25:33 h	15
05.04	50mi	18th American River 50 Mile Endurance Run	7:09:28 h	34
15.03	50km	8th Way Too Cool 50K Endurance Run	4:26:01 h	32
18.01	50km	19th Jed Smith Ultra Classic - 50 km Race	3:57:36 h	18

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	31/1/2015	23rd Rocky Raccoon 100 Mile Trail Run - US Championchips	160,93	×3
✓ 2	23/6/2012	39th Western States 100 Mile Endurance Run	160,93	×3
✓ 3	26/6/2004	31th Western States 100 Mile Endurance Run	160,93	×3
✓ 4	2/5/2015	2nd The Canyons Endurance 100 km Run	100,00	×2
✓ 5	10/5/2014	2nd Gold Rush 100k	100,00	×2
✓ 6	11/5/2013	1st Gold Rush 100k	100,00	×2
✓ 7	1/5/2004	9th Miwok 100k Trail race	100,00	×2
✓ 8	27/2/1999	3rd Catalina 100K Trail Run	100,00	×2
✓ 9	10/8/2019	9th Cool Moon 50 Mile Endurance Run	80,47	×1
✓ 10	20/4/2019	Mokelumne River 50 Mile Trail Run	80,47	×1
✓ 11	18/11/2017	11th Endurance Challenge - California Trail 50 Mile	80,47	×1
✓ 12	8/10/2016	34th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 13	9/4/2016	8th Lake Sonoma 50 Mile Race	80,47	×1
✓ 14	11/4/2015	7th Lake Sonoma 50 Mile Race	80,47	×1
✓ 15	12/4/2014	6th Lake Sonoma 50 Mile Race	80,47	×1
✓ 16	1/12/2012	6th Endurance Challenge - California Trail 50 Mile	80,47	×1
✓ 17	14/4/2012	4th Lake Sonoma 50 Mile Race	80,47	×1
✓ 18	9/4/2011	32nd American River 50 Mile Endurance Run	80,47	×1
✓ 19	4/4/2009	30th American River 50 Mile Endurance Run	80,47	×1
✓ 20	15/5/2004	19th Silver State 50 Miles	80,47	×1
✓ 21	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 22	5/4/2003	24th American River 50 Mile Endurance Run	80,47	×1
✓ 23	6/4/2002	23rd American River 50 Mile Endurance Run	80,47	×1
✓ 24	12/5/2001	18th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 25	7/4/2001	22nd American River 50 Mile Endurance Run	80,47	×1
✓ 26	10/4/1999	20th American River 50 Mile Endurance Run	80,47	×1
✓ 27	6/9/1998	4th Run On The Sly 50 Mile	80,47	×1
✓ 28	5/4/1997	18th American River 50 Mile Endurance Run	80,47	×1
✓ 29	31/12/2014	5th New Years One Day 6 Hour Run	66,84	×1
✓ 30	4/5/2019	39th Wild Wild West 50k	50,00	×1
✓ 31	9/3/2019	8th Marin Ultra Challenge 50 km Race	50,00	×1
✓ 32	15/12/2018	7th Woodside Ramble 50K - Winter	50,00	×1
✓ 33	17/3/2018	3rd Ruck a Chuck 50K	50,00	×1
✓ 34	24/2/2018	4th Salmon Falls 50 km Race	50,00	×1
✓ 35	18/2/2017	5th FOURmidable 50K	50,00	×1
✓ 36	7/1/2017	37th Avalon Benefit 50 km Run	50,00	×1
✓ 37	1/1/2017	15th Woodside Trail Run 50K	50,00	×1
✓ 38	7/8/2016	35th Skyline 50k Endurance Run	50,00	×1
✓ 39	14/5/2016	3rd Gold Rush 50k	50,00	×1
✓ 40	6/2/2016	38th Jed Smith Ultra Classic - 50 km Race	50,00	×1
✓ 41	11/1/2015	5th Crystal Springs 50 km Winter Trail Run	50,00	×1
✓ 42	14/12/2014	3rd Woodside Ramble 50K - Winter	50,00	×1
✓ 43	6/9/2014	3rd Lost Sierra Endurance Run	50,00	×1
✓ 44	8/3/2014	25th Way Too Cool 50K Endurance Run	50,00	×1
✓ 45	29/12/2013	12th Woodside Trail Run 50K	50,00	×1
✓ 46	12/10/2013	5th Skyline to the Sea 50km	50,00	×1
✓ 47	18/8/2013	18th Run On The Sly 50 km	50,00	×1
✓ 48	27/4/2013	4th Folsom Lake Trail Run - Spring 50K	50,00	×1
✓ 49	9/3/2013	24th Way Too Cool 50K Endurance Run	50,00	×1
✓ 50	27/10/2012	7th Stinson Beach 50 km	50,00	×1
51	25/2/2012	2nd Chabot Trail Run	50,00	×1
52	21/8/2011	16th Run On The Sly 50 km	50,00	×1
53	4/6/2011	4th Auburn Trail Run 50K	50,00	×1
54	21/5/2011	26th Silver State 50 km	50,00	×1
55	30/4/2011	28th Quicksilver 50 km Endurance Run	50,00	×1
56	19/3/2011	3rd Diablo Trails Challenge	50,00	×1
57	5/2/2011	33rd Jed Smith Ultra Classic - 50 km Race	50,00	×1
58	23/1/2011	8th Pacifica 50 km Trail Run - Winter Edition	50,00	×1
59	10/5/2009	4th Redwood Park 50K Trail Run	50,00	×1
60	7/2/2009	8th Woodside Trail Run 50K	50,00	×1
61	17/1/2009	6th Pacifica 50 km Trail Run - Winter Edition	50,00	×1
62	13/3/2004	15th Way Too Cool 50K Endurance Run	50,00	×1
63	19/7/2003	3rd Tahoe Rim Trail 50km Endurance Runs	50,00	×1
64	18/5/2003	16th Ohlone 50K Wilderness Run	50,00	×1
65	17/5/2003	18th Silver State 50 km	50,00	×1
66	8/2/2003	25th Jed Smith Ultra Classic - 50 km Race	50,00	×1
67	9/2/2002	24th Jed Smith Ultra Classic - 50 km Race	50,00	×1
68	12/2/2000	22nd Jed Smith Ultra Classic - 50 km Race	50,00	×1
69	13/3/1999	10th Way Too Cool 50K Endurance Run	50,00	×1
70	13/2/1999	21st Jed Smith Ultra Classic - 50 km Race	50,00	×1
71	1/8/1998	17th Skyline 50k Endurance Run	50,00	×1
72	2/8/1997	16th Skyline 50k Endurance Run	50,00	×1
73	15/3/1997	8th Way Too Cool 50K Endurance Run	50,00	×1
74	18/1/1997	19th Jed Smith Ultra Classic - 50 km Race	50,00	×1
75	26/11/2011	27th Quad Dipsea Trail Run	45,06	—
76	25/11/2000	16th Quad Dipsea Trail Run	45,06	—