Les Michalak

Born : 1950 Cat. M75 Ultrarunner since 1992

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 ?

Argentina

Belgium

Canada

France

South Korea

Netherlands

New Zealand

South Africa

Taiwan

United States

31,4%

Rank quotient ?This runner's calculation uses 96 eligible race(s): Σ(rank − 1) = 10 467; Σ finishers = 33 341. 10 467 / 33 341 × 100 = 31.39%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed97

Km — ultra races8 256 km

> 100 km12

> 160 km11

> 24h2

Longest race188,5 km

17th Self-Transcendence 24 Hour Race Ottawa — 13/9/1997

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road31,2%

Trail67,7%

Stage1,1%

Wins & podiums (ultra)

🏆 Win2

🏆 Win M2

🏅 Top 310

🏅 Top 3 M14

Longest winning streak1

Current streak0

Records

50 km3h57'26 100 km8h24'22 50 mi7h11'33 100 mi18h47'35 6 h72,13 km 24 h188,46 km

HISTORY

106 race(s) · 7 split(s) nested

Date		Race	Perf.	Rk
2017
05.08	50mi	8th Beast of Burden Summer 50 Miler	9:58:37 h	9
04.06	87km	92nd Comrades Marathon - Up Run	10:44:20 h	7013
2016
01.10	50km	15th Run for the Toad 50 km	6:29:51 h	78
09.07	56km	7th Limberlost 56 km Challenge	9:46:44 h	41
04.06	50mi	4th Cayuga Trails 50 Mile Race	13:50:59 h	155
24.04	6h	20th Buffalo Runners 6 Hour Distance Classic	57.292 km	8
2012
17.11	50mi	50th JFK 50 Mile	10:01:18 h	420
16.06	50mi	23th Mohican Trail 50 Mile	11:54:34 h	60
11.05	50mi	1st The Zion 50 Mile Run	11:24:49 h	25
04.02	50mi	20th Rocky Raccoon 50 Mile Trail Run	9:16:40 h	25
2011
08.01	100km	11th Bandera 100 km Ultratrail	13:00:45 h	29
2010
29.05	50mi	18th Sulphur Springs Trail Run 50mi	9:43:38 h	23
2009
21.11	50mi	47th JFK 50 Mile	9:14:09 h	229
2008
22.11	50mi	46th JFK 50 Mile	9:10:45 h	189
2007
17.11	50mi	45th JFK 50 Mile	8:22:25 h	124
29.09	50km	6th Run for the Toad 50 km	5:12:37 h	31
02.06	100mi	12th Kettle Moraine 100 Mile Endurance Run	22:19:57 h	15
2006
09.12	50mi	17th Sunmart Texas Trails 50 Mile	7:35:33 h	22
18.11	50mi	44th JFK 50 Mile	8:04:30 h	75
08.10	50km	IAU 100km WC Misari/Seoul - 50km Split	4:18:23 h	94
08.10	100km	IAU 100km WC Misari/Seoul	10:22:02 h	106
24.06	100mi	33th Western States 100 Mile Endurance Run	29:12:59 h	168
06.05	50km	6th Toronto Ultra Race 100km - 50km Split	4:05:16 h	5
06.05	100km	6th Toronto Ultra Race 100km	8:46:21 h	6
08.04	50mi	14th Bull Run Run 50 Miler	8:52:17 h	26
2005
11.12	100km	100 km Seniorenweltmeisterschaft (WMA), Bariloche	9:25:55 h	7
19.11	50mi	43rd JFK 50 Mile	7:51:33 h	51
15.10	50km	3rd Vulture Bait 50 km Trail Race	4:34:24 h	11
01.10	50km	4th Run for the Toad 50 km	4:39:10 h	12
30.07	92km/2stages	Ultimat Canuck 92 km Stage Race	8:55:13 h	6
11.06	6h	13th Self Transcendence 6 Hour Run Kingston	64.094 km	4
19.02	100km	10th Taupo Great Lake Relay	11:36:47 h	5
2004
04.12	50mi	15th Sunmart Texas Trails 50 Mile	7:51:52 h	18
20.11	50mi	42nd JFK 50 Mile	8:18:16 h	72
30.10	6h	3rd Horror Hill 6 Hour Ultra Trail Race	60.400 km	2 🥈
16.10	50km	2nd Vulture Bait 50 km Trail Race	4:39:43 h	11
02.10	50km	3rd Run for the Toad 50 km	4:43:04 h	16
11.09	50km	9th Haliburton Forest 50 km Race	5:32:58 h	9
19.06	100mi	15th Mohican Trail 100 Mile	20:31:33 h	8
01.05	100km	4th Toronto Ultra Race 100km	9:17:54 h	2 🥈
03.04	50mi	25th American River 50 Mile Endurance Run	8:20:43 h	48
10.01	100km	4th Bandera 100 km Ultratrail	11:59:24 h	7
2003
22.11	50mi	41st JFK 50 Mile	8:12:39 h	61
16.11	100km	IAU 100km WC Taipei	9:59:21 h	80
18.10	50km	1st Vulture Bait 50 km Trail Race	3:57:26 h	6
14.06	100mi	14th Mohican Trail 100 Mile	19:51:30 h	4
10.05	100km	3rd Toronto Ultra Race 100km	8:33:39 h	3 🥉
11.01	100km	3rd Bandera 100 km Ultratrail	11:41:00 h	4
2002
21.06	100km	IAU 100km WC Torhout (23. Nacht van Vlaanderen)	8:50:31 h	106
25.05	50km	10th Sulphur Springs Trail Run 50km	4:43:36 h	4
27.04	50km	7th Ganaraska 50 km Trail Run	4:53:44 h	6
20.04	100km	2nd Toronto Ultra Race 100km	8:24:22 h	2 🥈
2001
17.11	50mi	39th JFK 50 Mile	8:07:09 h	59
06.10	50km	10th Slough Of Despond 50 km Road Race	4:07:55 h	7
08.09	50km	20th Self-Transcendence 24 Hour Race Ottawa - 50km Split	5:26:54 h	4
08.09	50mi	20th Self-Transcendence 24 Hour Race Ottawa - 50mi Split	9:25:15 h	2 🥈
08.09	100km	20th Self-Transcendence 24 Hour Race Ottawa - 100km Split	12:17:19 h	3 🥉
08.09	6h	20th Self-Transcendence 24 Hour Race Ottawa - 6h Split	54.000 km	3 🥉
08.09	12h	20th Self-Transcendence 24 Hour Race Ottawa - 12h Split	98.000 km	2 🥈
08.09	24h	20th Self-Transcendence 24 Hour Race Ottawa	154.796 km	4
01.09	50mi	6th Haliburton Forest 50 Mile Race	8:40:47 h	8
26.08	100km	IAU 100km WC Cleder - Open race	9:05:40 h	273
26.08	100km	IAU 100km WC Cleder	9:05:40 h	111
21.07	50km	5th Damn Tuff Ruff Bluff Run	4:47:02 h	9
30.06	50mi	9th Niagara Ultra 50 Mile	8:01:33 h	4
09.06	50km	9th Self Transcendence 6 Hour Run Kingston - 50km Split	4:12:02 h	5
09.06	6h	9th Self Transcendence 6 Hour Run Kingston	70.037 km	2 🥈
26.05	100mi	9th Sulphur Springs Trail Run 100mi	18:47:53 h	1 🏆
28.04	50km	6th Ganaraska 50 km Trail Run	4:49:18 h	4
21.04	100km	1st Toronto Ultra Race 100km	8:46:45 h	2 🥈
2000
02.12	50mi	11th Sunmart Texas Trails 50 Mile	7:20:59 h	12
04.11	50mi	38th JFK 50 Mile	7:51:57 h	50
14.10	50km	9th Slough Of Despond 50 km Road Race	4:15:30 h	9
03.06	100mi	22nd Old Dominion 100 Mile Endurance Run	21:39:34 h	13
29.04	50km	5th Ganaraska 50 km Trail Run	5:00:22 h	8
15.04	50km	5th Ascension 50 km Run	4:16:47 h	8
1999
04.12	50mi	10th Sunmart Texas Trails 50 Mile	7:16:01 h	25
05.06	50km	7th Self Transcendence 6 Hour Run Kingston - 50km Split	4:14:36 h	4
05.06	6h	7th Self Transcendence 6 Hour Run Kingston	66.692 km	4
29.05	50km	7th Sulphur Springs Trail Run 50km	5:04:20 h	10
10.04	100mi	5th Umstead Endurance Run 100 Miles	18:47:35 h	6
1998
21.11	50mi	36th JFK 50 Mile	7:26:10 h	26
27.06	100km	6th Niagara Ultra 100 km	10:08:47 h	5
06.06	50km	6th Self Transcendence 6 Hour Run Kingston - 50km Split	3:59:15 h	5
06.06	6h	6th Self Transcendence 6 Hour Run Kingston	72.128 km	4
1997
11.10	50km	6th Slough Of Despond 50 km Road Race	4:16:05 h	12
13.09	24h	17th Self-Transcendence 24 Hour Race Ottawa	188.457 km	1 🏆
13.09	50km	17th Self-Transcendence 24 Hour Race Ottawa - 50km Split	4:59:46 h	6
13.09	6h	17th Self-Transcendence 24 Hour Race Ottawa - 6h Split	60.000 km	5
13.09	50mi	17th Self-Transcendence 24 Hour Race Ottawa - 50mi Split	8:10:24 h	4
13.09	100km	17th Self-Transcendence 24 Hour Race Ottawa - 100km Split	10:18:46 h	2 🥈
13.09	12h	17th Self-Transcendence 24 Hour Race Ottawa - 12h Split	113.600 km	2 🥈
13.09	100mi	17th Self-Transcendence 24 Hour Race Ottawa - 100mi Split	17:53:58 h	1 🏆
30.08	50km	2nd Haliburton Forest 50 km Race	4:47:06 h	7
19.07	50km	1st Damn Tuff Ruff Bluff Run	4:48:49 h	4
07.06	6h	5th Self Transcendence 6 Hour Run Kingston	70.869 km	5
24.05	50km	5th Sulphur Springs Trail Run 50km	4:41:43 h	15
26.04	50km	2nd Ganaraska 50 km Trail Run	4:58:21 h	11
12.04	50mi	5th Bull Run Run 50 Miler	8:25:03 h	26
1996
23.11	50mi	34th JFK 50 Mile	8:03:41 h	69
31.08	100mi	1st Haliburton Forest 100 Mile Race	19:28:40 h	2 🥈
25.05	50km	4th Sulphur Springs Trail Run 50km	4:47:30 h	13
04.05	100km	9th Harriers Elk/Beaver Ultras, 100km	9:52:29 h	6
24.02	6h	1st Ascension Six Hour Run	62.320 km	5
1995
18.11	50mi	33rd JFK 50 Mile	7:30:21 h	14
16.09	100km	20. IAU 100km WC Winschoten	8:53:07 h	143
16.09	50km	20. IAU 100km WC Winschoten - 50km Split	4:00:25 h	134
1994
19.11	50mi	32nd JFK 50 Mile	7:11:33 h	17
23.07	100mi	6th Vermont 100 Mile Endurance Race	21:53:57 h	42
1993
20.11	50mi	31st JFK 50 Mile	7:38:33 h	16
27.02	100km	New York Ultimax 100km Race	9:10:10 h	32
1992
12.09	50mi	9th Groundhog Fall 50 Mile Endurance Run	8:01:54 h	14
20.06	100mi	3rd Mohican Trail 100 Mile	20:57:00 h	3 🥉

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	13/9/1997	17th Self-Transcendence 24 Hour Race Ottawa	188,46	×2
✓ 2	2/6/2007	12th Kettle Moraine 100 Mile Endurance Run	160,93	×2
✓ 3	24/6/2006	33th Western States 100 Mile Endurance Run	160,93	×2
✓ 4	19/6/2004	15th Mohican Trail 100 Mile	160,93	×2
✓ 5	14/6/2003	14th Mohican Trail 100 Mile	160,93	×2
✓ 6	26/5/2001	9th Sulphur Springs Trail Run 100mi	160,93	×2
✓ 7	3/6/2000	22nd Old Dominion 100 Mile Endurance Run	160,93	×2
✓ 8	10/4/1999	5th Umstead Endurance Run 100 Miles	160,93	×2
✓ 9	31/8/1996	1st Haliburton Forest 100 Mile Race	160,93	×2
✓ 10	23/7/1994	6th Vermont 100 Mile Endurance Race	160,93	×2
✓ 11	20/6/1992	3rd Mohican Trail 100 Mile	160,93	×2
✓ 12	8/9/2001	20th Self-Transcendence 24 Hour Race Ottawa	154,80	×2
✓ 13	8/1/2011	11th Bandera 100 km Ultratrail	100,00	×1
✓ 14	8/10/2006	IAU 100km WC Misari/Seoul	100,00	×1
✓ 15	6/5/2006	6th Toronto Ultra Race 100km	100,00	×1
✓ 16	11/12/2005	100 km Seniorenweltmeisterschaft (WMA), Bariloche	100,00	×1
✓ 17	19/2/2005	10th Taupo Great Lake Relay	100,00	×1
✓ 18	1/5/2004	4th Toronto Ultra Race 100km	100,00	×1
✓ 19	10/1/2004	4th Bandera 100 km Ultratrail	100,00	×1
✓ 20	16/11/2003	IAU 100km WC Taipei	100,00	×1
✓ 21	10/5/2003	3rd Toronto Ultra Race 100km	100,00	×1
✓ 22	11/1/2003	3rd Bandera 100 km Ultratrail	100,00	×1
✓ 23	21/6/2002	IAU 100km WC Torhout (23. Nacht van Vlaanderen)	100,00	×1
✓ 24	20/4/2002	2nd Toronto Ultra Race 100km	100,00	×1
✓ 25	26/8/2001	IAU 100km WC Cleder - Open race	100,00	×1
✓ 26	21/4/2001	1st Toronto Ultra Race 100km	100,00	×1
✓ 27	27/6/1998	6th Niagara Ultra 100 km	100,00	×1
✓ 28	4/5/1996	9th Harriers Elk/Beaver Ultras, 100km	100,00	×1
✓ 29	16/9/1995	20. IAU 100km WC Winschoten	100,00	×1
✓ 30	27/2/1993	New York Ultimax 100km Race	100,00	×1
✓ 31	30/7/2005	Ultimat Canuck 92 km Stage Race	92,00	×1
✓ 32	4/6/2017	92nd Comrades Marathon - Up Run	87,00	×1
✓ 33	5/8/2017	8th Beast of Burden Summer 50 Miler	80,47	×1
✓ 34	4/6/2016	4th Cayuga Trails 50 Mile Race	80,47	×1
✓ 35	17/11/2012	50th JFK 50 Mile	80,47	×1
✓ 36	16/6/2012	23th Mohican Trail 50 Mile	80,47	×1
✓ 37	11/5/2012	1st The Zion 50 Mile Run	80,47	×1
✓ 38	4/2/2012	20th Rocky Raccoon 50 Mile Trail Run	80,47	×1
✓ 39	29/5/2010	18th Sulphur Springs Trail Run 50mi	80,47	×1
✓ 40	21/11/2009	47th JFK 50 Mile	80,47	×1
✓ 41	22/11/2008	46th JFK 50 Mile	80,47	×1
✓ 42	17/11/2007	45th JFK 50 Mile	80,47	×1
✓ 43	9/12/2006	17th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 44	18/11/2006	44th JFK 50 Mile	80,47	×1
✓ 45	8/4/2006	14th Bull Run Run 50 Miler	80,47	×1
✓ 46	19/11/2005	43rd JFK 50 Mile	80,47	×1
✓ 47	4/12/2004	15th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 48	20/11/2004	42nd JFK 50 Mile	80,47	×1
✓ 49	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 50	22/11/2003	41st JFK 50 Mile	80,47	×1
✓ 51	17/11/2001	39th JFK 50 Mile	80,47	×1
✓ 52	1/9/2001	6th Haliburton Forest 50 Mile Race	80,47	×1
✓ 53	30/6/2001	9th Niagara Ultra 50 Mile	80,47	×1
✓ 54	2/12/2000	11th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 55	4/11/2000	38th JFK 50 Mile	80,47	×1
✓ 56	4/12/1999	10th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 57	21/11/1998	36th JFK 50 Mile	80,47	×1
✓ 58	12/4/1997	5th Bull Run Run 50 Miler	80,47	×1
✓ 59	23/11/1996	34th JFK 50 Mile	80,47	×1
✓ 60	18/11/1995	33rd JFK 50 Mile	80,47	×1
✓ 61	19/11/1994	32nd JFK 50 Mile	80,47	×1
✓ 62	20/11/1993	31st JFK 50 Mile	80,47	×1
✓ 63	12/9/1992	9th Groundhog Fall 50 Mile Endurance Run	80,47	×1
✓ 64	6/6/1998	6th Self Transcendence 6 Hour Run Kingston	72,13	—
✓ 65	7/6/1997	5th Self Transcendence 6 Hour Run Kingston	70,87	—
✓ 66	9/6/2001	9th Self Transcendence 6 Hour Run Kingston	70,04	—
67	5/6/1999	7th Self Transcendence 6 Hour Run Kingston	66,69	—
68	11/6/2005	13th Self Transcendence 6 Hour Run Kingston	64,09	—
69	24/2/1996	1st Ascension Six Hour Run	62,32	—
70	30/10/2004	3rd Horror Hill 6 Hour Ultra Trail Race	60,40	—
71	24/4/2016	20th Buffalo Runners 6 Hour Distance Classic	57,29	—
72	9/7/2016	7th Limberlost 56 km Challenge	56,00	—
73	1/10/2016	15th Run for the Toad 50 km	50,00	—
74	29/9/2007	6th Run for the Toad 50 km	50,00	—
75	15/10/2005	3rd Vulture Bait 50 km Trail Race	50,00	—
76	1/10/2005	4th Run for the Toad 50 km	50,00	—
77	16/10/2004	2nd Vulture Bait 50 km Trail Race	50,00	—
78	2/10/2004	3rd Run for the Toad 50 km	50,00	—
79	11/9/2004	9th Haliburton Forest 50 km Race	50,00	—
80	18/10/2003	1st Vulture Bait 50 km Trail Race	50,00	—
81	25/5/2002	10th Sulphur Springs Trail Run 50km	50,00	—
82	27/4/2002	7th Ganaraska 50 km Trail Run	50,00	—
83	6/10/2001	10th Slough Of Despond 50 km Road Race	50,00	—
84	21/7/2001	5th Damn Tuff Ruff Bluff Run	50,00	—
85	28/4/2001	6th Ganaraska 50 km Trail Run	50,00	—
86	14/10/2000	9th Slough Of Despond 50 km Road Race	50,00	—
87	29/4/2000	5th Ganaraska 50 km Trail Run	50,00	—
88	15/4/2000	5th Ascension 50 km Run	50,00	—
89	29/5/1999	7th Sulphur Springs Trail Run 50km	50,00	—
90	11/10/1997	6th Slough Of Despond 50 km Road Race	50,00	—
91	30/8/1997	2nd Haliburton Forest 50 km Race	50,00	—
92	19/7/1997	1st Damn Tuff Ruff Bluff Run	50,00	—
93	24/5/1997	5th Sulphur Springs Trail Run 50km	50,00	—
94	26/4/1997	2nd Ganaraska 50 km Trail Run	50,00	—
95	25/5/1996	4th Sulphur Springs Trail Run 50km	50,00	—