Kirk Boisseree

Born : 1957 Cat. M65 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

44,6%

Rank quotient ?This runner's calculation uses 119 eligible race(s): Σ(rank − 1) = 7 627; Σ finishers = 17 094. 7 627 / 17 094 × 100 = 44.62%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed119

Km — ultra races8 933 km

> 100 km16

> 160 km16

> 24h2

Longest race171,8 km

3rd Gibson Ranch 24-hour Classic — 1/1/1993

Km per year (ultra races)

2022

150

2023

130

2024

100

2025

2026

Race types (share of distance)

Road8,1%

Trail91,9%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M1

🏅 Top 32

🏅 Top 3 M3

Longest winning streak0

Current streak0

Records

50 km5h00'54 100 km12h21'40 50 mi8h21'43 100 mi23h55'21 6 h46,03 km 12 h56,17 km 24 h171,80 km

HISTORY

119 race(s)

Date		Race	Perf.	Rk
2026
12.09	50km	14th Berkeley Trail Adventure	8:29:00 h	73
2025
03.08	50km	44th Skyline 50k Endurance Run	8:03:50 h	130
15.02	50km	13th FOURmidable 50K	7:58:34 h	115
2024
08.12	50km	16th Hunter S. Thompson Fear & Loathing 50 km	7:37:00 h	47
06.04	50mi	44th American River 50 Mile Endurance Run	12:55:26 h	221
2023
12.08	50km	19th Rodeo Beach 50km	8:36:37 h	15
10.06	50km	2nd Mt. Umunhum Ultras - 50 km	7:54:00 h	13
04.02	50km	5th Mount Umunhum Trail Run	7:54:00 h	14
2022
09.04	50km	13th Diablo Trails Challenge	8:16:58 h	65
2021
31.12	12h	11th New Years One Day 12 Hour Run	56.166 km	21
19.08	50mi	15th Headlands Hundred 50 Mile Endurance Run	14:28:46 h	30
2020
06.12	50km	12th Hunter S. Thompson Fear & Loathing 50 km	6:36:00 h	21
2019
31.12	6h	10th New Years One Day 6 Hour Run	46.027 km	24
2018
08.12	50km	10th Hunter S. Thompson Fear & Loathing 50 km	8:18:00 h	40
2017
07.10	50mi	35th Dick Collins Firetrails 50 Mile	12:51:35 h	34
2016
24.09	50km	5th Berkeley Trail Adventure	7:46:02 h	31
2015
20.09	50km	28th Ohlone 50K Wilderness Run	9:18:48 h	68
30.08	50km	6th Diablo 50 km Trail Run	7:57:55 h	28
19.04	50km	7th Diablo Trails Challenge	7:37:35 h	69
07.02	50km	37th Jed Smith Ultra Classic - 50 km Race	5:24:48 h	47
2014
07.12	50mi	6th Hunter S. Thompson Fear & Loathing 50 Miles	10:14:00 h	7
06.09	100km	1st Overlook Endurance Run 100K	17:55:16 h	15
03.08	50km	33rd Skyline 50k Endurance Run	5:50:14 h	88
2013
28.09	50km	12th Stevens Creek Striders 50K	6:56:07 h	27
20.04	50km	5th Diablo Trails Challenge	7:15:23 h	73
13.04	50mi	5th Lake Sonoma 50 Mile Race	12:56:02 h	245
2012
08.09	50km	11th Stevens Creek Striders 50K	6:29:07 h	14
20.05	50km	25th Ohlone 50K Wilderness Run	7:40:24 h	96
14.04	50mi	4th Lake Sonoma 50 Mile Race	12:01:22 h	182
2011
31.12	24h	2nd New Years One Day 24 Hour Run	165.628 km	5
22.05	50km	24th Ohlone 50K Wilderness Run	6:46:07 h	69
16.04	50mi	Mokelumne River 50 Mile Trail Run	11:34:26 h	12
19.03	50km	3rd Diablo Trails Challenge	7:39:09 h	36
2010
15.08	50km	9th Stevens Creek Striders 50K	7:26:55 h	41
23.05	50km	23rd Ohlone 50K Wilderness Run	7:47:15 h	135
2009
12.09	100mi	30th Wasatch Front 100 Mile	35:54:20 h	155
18.07	100mi	21st Vermont 100 Mile Endurance Race	27:19:49 h	124
27.06	100mi	36th Western States 100 Mile Endurance Run	29:36:43 h	216
09.05	50mi	26th Quicksilver 50 Mile Endurance Run	9:56:17 h	42
14.03	50km	20th Way Too Cool 50K Endurance Run	5:45:29 h	202
2008
07.09	50km	7th Stevens Creek Striders 50K	7:10:10 h	18
15.08	50km	3rd Psychedelic Climacteric 50k	6:25:00 h	7
19.07	100mi	20th Vermont 100 Mile Endurance Race	29:05:14 h	136
18.05	50km	21st Ohlone 50K Wilderness Run	7:40:36 h	58
12.04	50mi	6th Diablo Endurance Run	13:51:28 h	55
08.03	50km	19th Way Too Cool 50K Endurance Run	5:56:00 h	236
2007
13.10	50mi	25th Dick Collins Firetrails 50 Mile	10:42:58 h	130
08.09	50km	6th Stevens Creek Striders 50K	6:59:30 h	28
15.06	100mi	16th Bighorn Mountain Wild & Scenic 100mi Trail Run	32:23:35 h	57
20.05	50km	20th Ohlone 50K Wilderness Run	6:42:52 h	56
10.03	50km	18th Way Too Cool 50K Endurance Run	6:05:59 h	264
03.02	50km	6th Woodside Trail Run 50K	5:41:42 h	38
2006
25.03	50km	5th Stevens Creek Striders 50K	6:46:00 h	28
2005
09.07	100mi	12th Hardrock Hundred Endurance Run	47:11:03 h	66
22.05	50km	18th Ohlone 50K Wilderness Run	7:03:07 h	43
16.04	50mi	3rd Diablo Endurance Run	13:02:47 h	28
20.03	50km	4th Stevens Creek Striders 50K	6:20:47 h	26
2004
14.08	50mi	2nd Diablo Endurance Run	12:56:00 h	30
01.08	50km	23rd Skyline 50k Endurance Run	5:28:43 h	56
03.04	50mi	25th American River 50 Mile Endurance Run	9:38:47 h	165
21.03	50km	3rd Stevens Creek Striders 50K	6:09:41 h	23
10.01	53mi	25th Epiphany Ultras - The Real Deal	11:24:00 h	2 🥈
2003
03.08	50km	22nd Skyline 50k Endurance Run	5:55:20 h	90
03.05	100km	8th Miwok 100k Trail race	13:23:12 h	102
22.03	50km	2nd Stevens Creek Striders 50K	6:07:05 h	16
2002
07.09	100mi	23rd Wasatch Front 100 Mile	33:44:36 h	85
20.07	50mi	2nd Tahoe Rim Trail 50M Endurance Runs	11:18:25 h	21
19.05	50km	15th Ohlone 50K Wilderness Run	6:28:50 h	45
04.05	100km	7th Miwok 100k Trail race	12:21:40 h	75
23.03	50km	1st Stevens Creek Striders 50K	6:29:58 h	3 🥉
2001
13.07	100mi	9th Hardrock Hundred Endurance Run	43:05:56 h	42
10.03	50km	12th Way Too Cool 50K Endurance Run	5:08:49 h	102
09.01	50mi	Epiphany Ultras - The Real Deal	8:54:20 h	5
2000
25.11	28mi	16th Quad Dipsea Trail Run	5:53:13 h	80
16.09	52.4mi	14th Sierra Nevada Endurance 52 Mile Run	11:41:34 h	28
24.06	100mi	27th Western States 100 Mile Endurance Run	26:52:20 h	103
11.03	50km	11th Way Too Cool 50K Endurance Run	5:07:37 h	84
11.01	49mi	Epiphany Ultras - The Real Deal	9:04:00 h	8
1999
09.10	50mi	17th Dick Collins Firetrails 50 Mile	9:51:03 h	21
07.08	50km	18th Skyline 50k Endurance Run	5:02:32 h	47
15.05	50mi	14th Silver State 50 Miles	11:25:40 h	16
13.03	50km	10th Way Too Cool 50K Endurance Run	5:13:46 h	115
1998
10.10	50mi	16th Dick Collins Firetrails 50 Mile	9:08:26 h	24
02.05	100km	3rd Miwok 100k Trail race	12:44:30 h	42
14.03	50km	9th Way Too Cool 50K Endurance Run	5:17:36 h	95
12.01	47mi	Epiphany Ultras - The Real Deal	9:18:00 h	6
1997
29.11	28mi	13th Quad Dipsea Trail Run	6:13:33 h	99
28.06	100mi	24th Western States 100 Mile Endurance Run	23:55:21 h	105
18.05	50km	10th Ohlone 50K Wilderness Run	6:30:54 h	27
19.04	50mi	6th Leona Divide 50 Mile Run	9:11:16 h	44
15.03	50km	8th Way Too Cool 50K Endurance Run	5:00:54 h	92
06.01	46mi	Epiphany Ultras - The Real Deal	8:41:00 h	5
1996
12.10	50mi	14th Dick Collins Firetrails 50 Mile	9:17:35 h	34
03.08	50km	15th Skyline 50k Endurance Run	5:09:30 h	39
29.06	100mi	23rd Western States 100 Mile Endurance Run	27:15:55 h	115
24.05	50km	9th Ohlone 50K Wilderness Run	5:28:50 h	18
09.03	50km	7th Way Too Cool 50K Endurance Run	5:26:09 h	114
1995
28.10	52.4mi	9th Sierra Nevada Endurance 52 Mile Run	11:12:31 h	43
02.09	50km	1st Point Reyes 50K	5:56:38 h	65
13.05	50km	12th Quicksilver 50 km Endurance Run	5:33:58 h	27
01.04	50mi	16th American River 50 Mile Endurance Run	8:37:59 h	129
11.03	50km	6th Way Too Cool 50K Endurance Run	5:26:47 h	97
1994
26.11	28mi	10th Quad Dipsea Trail Run	6:07:40 h	78
08.10	50mi	12th Dick Collins Firetrails 50 Mile	9:25:23 h	27
20.08	100mi	12th Leadville Trail 100 Mile	28:49:02 h	114
07.05	50km	11th Quicksilver 50 km Endurance Run	5:48:12 h	11
02.04	50mi	15th American River 50 Mile Endurance Run	8:21:43 h	111
12.03	50km	5th Way Too Cool 50K Endurance Run	5:06:41 h	93
1993
09.10	50mi	11th Dick Collins Firetrails 50 Mile	8:59:08 h	24
10.09	100mi	14th Wasatch Front 100 Mile	29:42:20 h	31
26.06	100mi	20th Western States 100 Mile Endurance Run	25:18:53 h	68
08.05	50mi	10th Quicksilver 50 Mile Endurance Run	9:19:22 h	30
03.04	50mi	14th American River 50 Mile Endurance Run	8:33:39 h	131
13.03	50km	4th Way Too Cool 50K Endurance Run	5:27:26 h	115
01.01	24h	3rd Gibson Ranch 24-hour Classic	171.797 km	4
1992
02.08	50km	11th Skyline 50k Endurance Run	5:14:58 h	28
14.03	50km	3rd Way Too Cool 50K Endurance Run	5:18:57 h	94
25.01	50mi	6th Ledson Marsh 50 Mile	8:39:21 h	13
1991
19.05	50km	5th Ohlone 50K Wilderness Run	6:24:15 h	26

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	1/1/1993	3rd Gibson Ranch 24-hour Classic	171,80	×2
✓ 2	31/12/2011	2nd New Years One Day 24 Hour Run	165,63	×2
✓ 3	12/9/2009	30th Wasatch Front 100 Mile	160,93	×2
✓ 4	18/7/2009	21st Vermont 100 Mile Endurance Race	160,93	×2
✓ 5	27/6/2009	36th Western States 100 Mile Endurance Run	160,93	×2
✓ 6	19/7/2008	20th Vermont 100 Mile Endurance Race	160,93	×2
✓ 7	15/6/2007	16th Bighorn Mountain Wild & Scenic 100mi Trail Run	160,93	×2
✓ 8	9/7/2005	12th Hardrock Hundred Endurance Run	160,93	×2
✓ 9	7/9/2002	23rd Wasatch Front 100 Mile	160,93	×2
✓ 10	13/7/2001	9th Hardrock Hundred Endurance Run	160,93	×2
✓ 11	24/6/2000	27th Western States 100 Mile Endurance Run	160,93	×2
✓ 12	28/6/1997	24th Western States 100 Mile Endurance Run	160,93	×2
✓ 13	29/6/1996	23rd Western States 100 Mile Endurance Run	160,93	×2
✓ 14	20/8/1994	12th Leadville Trail 100 Mile	160,93	×2
✓ 15	10/9/1993	14th Wasatch Front 100 Mile	160,93	×2
✓ 16	26/6/1993	20th Western States 100 Mile Endurance Run	160,93	×2
✓ 17	6/9/2014	1st Overlook Endurance Run 100K	100,00	×1
✓ 18	3/5/2003	8th Miwok 100k Trail race	100,00	×1
✓ 19	4/5/2002	7th Miwok 100k Trail race	100,00	×1
✓ 20	2/5/1998	3rd Miwok 100k Trail race	100,00	×1
✓ 21	10/1/2004	25th Epiphany Ultras - The Real Deal	85,30	×1
✓ 22	16/9/2000	14th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 23	28/10/1995	9th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 24	6/4/2024	44th American River 50 Mile Endurance Run	80,47	×1
✓ 25	19/8/2021	15th Headlands Hundred 50 Mile Endurance Run	80,47	×1
✓ 26	7/10/2017	35th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 27	7/12/2014	6th Hunter S. Thompson Fear & Loathing 50 Miles	80,47	×1
✓ 28	13/4/2013	5th Lake Sonoma 50 Mile Race	80,47	×1
✓ 29	14/4/2012	4th Lake Sonoma 50 Mile Race	80,47	×1
✓ 30	16/4/2011	Mokelumne River 50 Mile Trail Run	80,47	×1
✓ 31	9/5/2009	26th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 32	12/4/2008	6th Diablo Endurance Run	80,47	×1
✓ 33	13/10/2007	25th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 34	16/4/2005	3rd Diablo Endurance Run	80,47	×1
✓ 35	14/8/2004	2nd Diablo Endurance Run	80,47	×1
✓ 36	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 37	20/7/2002	2nd Tahoe Rim Trail 50M Endurance Runs	80,47	×1
✓ 38	9/1/2001	Epiphany Ultras - The Real Deal	80,47	×1
✓ 39	9/10/1999	17th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 40	15/5/1999	14th Silver State 50 Miles	80,47	×1
✓ 41	10/10/1998	16th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 42	19/4/1997	6th Leona Divide 50 Mile Run	80,47	×1
✓ 43	12/10/1996	14th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 44	1/4/1995	16th American River 50 Mile Endurance Run	80,47	×1
✓ 45	8/10/1994	12th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 46	2/4/1994	15th American River 50 Mile Endurance Run	80,47	×1
✓ 47	9/10/1993	11th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 48	8/5/1993	10th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 49	3/4/1993	14th American River 50 Mile Endurance Run	80,47	×1
✓ 50	25/1/1992	6th Ledson Marsh 50 Mile	80,47	×1
✓ 51	11/1/2000	Epiphany Ultras - The Real Deal	78,86	×1
✓ 52	12/1/1998	Epiphany Ultras - The Real Deal	75,64	×1
✓ 53	6/1/1997	Epiphany Ultras - The Real Deal	74,03	×1
✓ 54	31/12/2021	11th New Years One Day 12 Hour Run	56,17	—
55	12/9/2026	14th Berkeley Trail Adventure	50,00	—
56	3/8/2025	44th Skyline 50k Endurance Run	50,00	—
57	15/2/2025	13th FOURmidable 50K	50,00	—
58	8/12/2024	16th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
59	12/8/2023	19th Rodeo Beach 50km	50,00	—
60	10/6/2023	2nd Mt. Umunhum Ultras - 50 km	50,00	—
61	4/2/2023	5th Mount Umunhum Trail Run	50,00	—
62	9/4/2022	13th Diablo Trails Challenge	50,00	—
63	6/12/2020	12th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
64	8/12/2018	10th Hunter S. Thompson Fear & Loathing 50 km	50,00	—
65	24/9/2016	5th Berkeley Trail Adventure	50,00	—
66	20/9/2015	28th Ohlone 50K Wilderness Run	50,00	—
67	30/8/2015	6th Diablo 50 km Trail Run	50,00	—
68	19/4/2015	7th Diablo Trails Challenge	50,00	—
69	7/2/2015	37th Jed Smith Ultra Classic - 50 km Race	50,00	—
70	3/8/2014	33rd Skyline 50k Endurance Run	50,00	—
71	28/9/2013	12th Stevens Creek Striders 50K	50,00	—
72	20/4/2013	5th Diablo Trails Challenge	50,00	—
73	8/9/2012	11th Stevens Creek Striders 50K	50,00	—
74	20/5/2012	25th Ohlone 50K Wilderness Run	50,00	—
75	22/5/2011	24th Ohlone 50K Wilderness Run	50,00	—
76	19/3/2011	3rd Diablo Trails Challenge	50,00	—
77	15/8/2010	9th Stevens Creek Striders 50K	50,00	—
78	23/5/2010	23rd Ohlone 50K Wilderness Run	50,00	—
79	14/3/2009	20th Way Too Cool 50K Endurance Run	50,00	—
80	7/9/2008	7th Stevens Creek Striders 50K	50,00	—
81	15/8/2008	3rd Psychedelic Climacteric 50k	50,00	—
82	18/5/2008	21st Ohlone 50K Wilderness Run	50,00	—
83	8/3/2008	19th Way Too Cool 50K Endurance Run	50,00	—
84	8/9/2007	6th Stevens Creek Striders 50K	50,00	—
85	20/5/2007	20th Ohlone 50K Wilderness Run	50,00	—
86	10/3/2007	18th Way Too Cool 50K Endurance Run	50,00	—
87	3/2/2007	6th Woodside Trail Run 50K	50,00	—
88	25/3/2006	5th Stevens Creek Striders 50K	50,00	—
89	22/5/2005	18th Ohlone 50K Wilderness Run	50,00	—
90	20/3/2005	4th Stevens Creek Striders 50K	50,00	—
91	1/8/2004	23rd Skyline 50k Endurance Run	50,00	—
92	21/3/2004	3rd Stevens Creek Striders 50K	50,00	—
93	3/8/2003	22nd Skyline 50k Endurance Run	50,00	—
94	22/3/2003	2nd Stevens Creek Striders 50K	50,00	—
95	19/5/2002	15th Ohlone 50K Wilderness Run	50,00	—
96	23/3/2002	1st Stevens Creek Striders 50K	50,00	—
97	10/3/2001	12th Way Too Cool 50K Endurance Run	50,00	—
98	11/3/2000	11th Way Too Cool 50K Endurance Run	50,00	—
99	7/8/1999	18th Skyline 50k Endurance Run	50,00	—
100	13/3/1999	10th Way Too Cool 50K Endurance Run	50,00	—
101	14/3/1998	9th Way Too Cool 50K Endurance Run	50,00	—
102	18/5/1997	10th Ohlone 50K Wilderness Run	50,00	—
103	15/3/1997	8th Way Too Cool 50K Endurance Run	50,00	—
104	3/8/1996	15th Skyline 50k Endurance Run	50,00	—
105	24/5/1996	9th Ohlone 50K Wilderness Run	50,00	—
106	9/3/1996	7th Way Too Cool 50K Endurance Run	50,00	—
107	2/9/1995	1st Point Reyes 50K	50,00	—
108	13/5/1995	12th Quicksilver 50 km Endurance Run	50,00	—
109	11/3/1995	6th Way Too Cool 50K Endurance Run	50,00	—
110	7/5/1994	11th Quicksilver 50 km Endurance Run	50,00	—
111	12/3/1994	5th Way Too Cool 50K Endurance Run	50,00	—
112	13/3/1993	4th Way Too Cool 50K Endurance Run	50,00	—
113	2/8/1992	11th Skyline 50k Endurance Run	50,00	—
114	14/3/1992	3rd Way Too Cool 50K Endurance Run	50,00	—
115	19/5/1991	5th Ohlone 50K Wilderness Run	50,00	—
116	31/12/2019	10th New Years One Day 6 Hour Run	46,03	—
117	25/11/2000	16th Quad Dipsea Trail Run	45,06	—
118	29/11/1997	13th Quad Dipsea Trail Run	45,06	—
119	26/11/1994	10th Quad Dipsea Trail Run	45,06	—