Byron Nuthall

Born : 1946 Cat. M80 Ultrarunner since 1988

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

73,0%

Rank quotient ?This runner's calculation uses 76 eligible race(s): Σ(rank − 1) = 6 257; Σ finishers = 8 573. 6 257 / 8 573 × 100 = 72.98%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed76

Km — ultra races5 168 km

> 100 km2

> 160 km1

> 24h12

Longest race160,9 km

8th Born to Run Ultra 100 Mile Marathon — 18/5/2018

Km per year (ultra races)

2022

2023

2024

2025

2026

Race types (share of distance)

Road13,1%

Trail86,9%

Records

50 km5h32'52 50 mi8h57'46 100 mi35h16'50 12 h50,69 km 24 h106,02 km

HISTORY

76 race(s)

Date		Race	Perf.	Rk
2019
25.05	24h	11th Nanny Goat 24 Hour Race	69.201 km	60
18.05	60mi	9th Born to Run Ultra 60 Mile Marathon	24:33:10 h	25
2018
02.12	50km	32nd OTHTC High Desert 50K Ultra	8:39:56 h	150
03.11	24h	3rd Boundiful 24 Hours Endurance Run	51.499 km	29
18.05	100mi	8th Born to Run Ultra 100 Mile Marathon	35:16:50 h	25
20.01	50mi	38th Avalon Benefit 50-Mile Run	17:22:25 h	158
2017
03.12	50km	31st OTHTC High Desert 50K Ultra	8:33:11 h	112
04.11	24h	2nd Boundiful 24 Hours Endurance Run	80.467 km	11
05.08	24h	3rd Julian Station Full Moon 24 Hour Run	64.856 km	21
27.05	24h	9th Nanny Goat 24 Hour Race	80.467 km	41
03.03	24h	2nd San Diego Pirate's Cove 24 Hour Run	106.023 km	8
2016
04.12	50km	30th OTHTC High Desert 50K Ultra	8:49:55 h	197
05.11	24h	1st Boundiful 24 Hours Endurance Run	80.467 km	11
20.08	24h	2nd Julian Station Full Moon 24 Hour Run	51.885 km	15
28.05	24h	8th Nanny Goat 24 Hour Race	65.983 km	130
2015
29.08	24h	1st Julian Station Full Moon 24 Hour Run	73.386 km	22
23.05	24h	7th Nanny Goat 24 Hour Race	80.467 km	105
14.03	50km	4th Marin Ultra Challenge 50 km Race	8:51:33 h	136
10.01	50mi	35th Avalon Benefit 50-Mile Run	10:05:05 h	111
2014
07.12	50km	28th OTHTC High Desert 50K Ultra	7:00:41 h	204
11.01	50mi	34th Avalon Benefit 50-Mile Run	13:17:00 h	272
2013
01.12	50km	27th OTHTC High Desert 50K Ultra	7:23:19 h	191
27.01	50km	9th Calico Trail Run 50 km	8:47:00 h	90
2012
02.12	50km	26th OTHTC High Desert 50K Ultra	7:48:23 h	200
2011
04.12	50km	25th OTHTC High Desert 50K Ultra	7:16:16 h	169
21.05	50km	18th Bishop High Sierra Ultramarathons 50 km	13:31:31 h	64
15.01	50mi	31st Avalon Benefit 50-Mile Run	13:46:30 h	201
2009
06.12	50km	23rd OTHTC High Desert 50K Ultra	7:15:25 h	194
2008
09.08	50mi	4th Angeles National Forest 50Mile Trail Race	12:23:04 h	48
17.05	50mi	15th Bishop High Sierra Ultramarathons 50 Miles	12:37:48 h	53
03.05	50km	28th Wild Wild West 50k	7:09:13 h	35
19.04	50mi	16th Leona Divide 50 Mile Run	11:07:15 h	105
20.01	50km	4th Calico Trail Run 50 km	6:37:05 h	82
12.01	50mi	28th Avalon Benefit 50-Mile Run	10:32:50 h	81
2007
02.12	50km	21st OTHTC High Desert 50K Ultra	5:32:52 h	73
21.04	50mi	15th Leona Divide 50 Mile Run	11:53:08 h	117
14.01	50km	3rd Calico Trail Run 50 km	6:28:14 h	45
2006
03.12	50km	20th OTHTC High Desert 50K Ultra	5:53:27 h	99
2005
21.05	50mi	12th Bishop High Sierra Ultramarathons 50 Miles	12:59:29 h	62
26.03	50km	22th San Juan Trail 50 km	9:01:18 h	62
26.02	50km	2nd Lake Hodges Trail Fest 50K	6:38:03 h	43
16.01	50km	1st Calico Trail Run 50 km	7:25:20 h	70
2004
04.12	50km	18th OTHTC High Desert 50K Ultra	6:07:58 h	115
15.05	50mi	11th Bishop High Sierra Ultramarathons 50 Miles	13:54:54 h	68
17.04	50mi	13th Leona Divide 50 Mile Run	12:12:43 h	112
03.04	50mi	10th Umstead Endurance Run 50 Miles	11:36:03 h	58
2003
04.05	50km	24th Wild Wild West 50k	7:34:55 h	54
05.04	50mi	9th Umstead Endurance Run 50 Miles	12:35:38 h	59
11.01	50mi	23rd Avalon Benefit 50-Mile Run	11:25:45 h	111
2002
08.12	50km	16th OTHTC High Desert 50K Ultra	6:13:40 h	135
1999
13.02	50km	16th San Juan Trail 50 km	7:23:04 h	67
09.01	50mi	19th Avalon Benefit 50-Mile Run	10:27:35 h	87
1998
12.09	50km	4th Baldy Peaks 50K	10:25:52 h	41
10.01	50mi	18th Avalon Benefit 50-Mile Run	9:58:59 h	61
1997
06.09	50km	3rd Baldy Peaks 50K	10:14:09 h	74
02.08	12h	Orange 12 Hour Run	50.694 km	26
11.01	50mi	17th Avalon Benefit 50-Mile Run	9:23:58 h	79
1996
08.12	50km	10th OTHTC High Desert 50K Ultra	5:37:28 h	74
20.04	50mi	5th Leona Divide 50 Mile Run	11:07:58 h	100
06.01	50mi	16th Avalon Benefit 50-Mile Run	10:38:00 h	68
1995
10.12	50km	9th OTHTC High Desert 50K Ultra	5:50:52 h	76
1994
11.12	50km	8th OTHTC High Desert 50K Ultra	5:51:23 h	58
29.10	50mi	11th San Juan Trail 50 Mile	12:01:31 h	63
20.08	50km	1st Baldy Peaks 50K	9:46:35 h	47
16.04	50mi	3rd Leona Divide 50 Mile Run	10:54:33 h	72
08.01	50mi	14th Avalon Benefit 50-Mile Run	10:44:33 h	81
1991
16.02	50mi	13th Pacific Crest Trail Fifty	10:58:46 h	65
20.01	40.5mi	Spunky Canyon Ultra	7:24:08 h	68
05.01	50mi	11th Avalon Benefit 50-Mile Run	8:57:46 h	43
1990
04.02	50mi	12th Pacific Crest Trail Fifty	11:06:13 h	31
06.01	50mi	10th Avalon Benefit 50-Mile Run	9:41:51 h	52
1989
04.08	24h	Orange 24 Hour Run	75.639 km	24
13.05	50mi	6th Quicksilver 50 Mile Endurance Run	11:15:26 h	56
09.04	50mi	10th American River 50 Mile Endurance Run	11:06:31 h	194
18.03	50km	3rd Crown King Scramble 50K	6:40:12 h	27
1988
14.02	50mi	10th Pacific Crest Trail Fifty	10:09:06 h	60

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	18/5/2018	8th Born to Run Ultra 100 Mile Marathon	160,93	×3
✓ 2	3/3/2017	2nd San Diego Pirate's Cove 24 Hour Run	106,02	×2
✓ 3	18/5/2019	9th Born to Run Ultra 60 Mile Marathon	96,56	×1
✓ 4	20/1/2018	38th Avalon Benefit 50-Mile Run	80,47	×1
✓ 5	10/1/2015	35th Avalon Benefit 50-Mile Run	80,47	×1
✓ 6	11/1/2014	34th Avalon Benefit 50-Mile Run	80,47	×1
✓ 7	15/1/2011	31st Avalon Benefit 50-Mile Run	80,47	×1
✓ 8	9/8/2008	4th Angeles National Forest 50Mile Trail Race	80,47	×1
✓ 9	17/5/2008	15th Bishop High Sierra Ultramarathons 50 Miles	80,47	×1
✓ 10	19/4/2008	16th Leona Divide 50 Mile Run	80,47	×1
✓ 11	12/1/2008	28th Avalon Benefit 50-Mile Run	80,47	×1
✓ 12	21/4/2007	15th Leona Divide 50 Mile Run	80,47	×1
✓ 13	21/5/2005	12th Bishop High Sierra Ultramarathons 50 Miles	80,47	×1
✓ 14	15/5/2004	11th Bishop High Sierra Ultramarathons 50 Miles	80,47	×1
✓ 15	17/4/2004	13th Leona Divide 50 Mile Run	80,47	×1
✓ 16	3/4/2004	10th Umstead Endurance Run 50 Miles	80,47	×1
✓ 17	5/4/2003	9th Umstead Endurance Run 50 Miles	80,47	×1
✓ 18	11/1/2003	23rd Avalon Benefit 50-Mile Run	80,47	×1
✓ 19	9/1/1999	19th Avalon Benefit 50-Mile Run	80,47	×1
✓ 20	10/1/1998	18th Avalon Benefit 50-Mile Run	80,47	×1
✓ 21	11/1/1997	17th Avalon Benefit 50-Mile Run	80,47	×1
✓ 22	20/4/1996	5th Leona Divide 50 Mile Run	80,47	×1
✓ 23	6/1/1996	16th Avalon Benefit 50-Mile Run	80,47	×1
✓ 24	29/10/1994	11th San Juan Trail 50 Mile	80,47	×1
✓ 25	16/4/1994	3rd Leona Divide 50 Mile Run	80,47	×1
✓ 26	8/1/1994	14th Avalon Benefit 50-Mile Run	80,47	×1
✓ 27	16/2/1991	13th Pacific Crest Trail Fifty	80,47	×1
✓ 28	5/1/1991	11th Avalon Benefit 50-Mile Run	80,47	×1
✓ 29	4/2/1990	12th Pacific Crest Trail Fifty	80,47	×1
✓ 30	6/1/1990	10th Avalon Benefit 50-Mile Run	80,47	×1
✓ 31	13/5/1989	6th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 32	9/4/1989	10th American River 50 Mile Endurance Run	80,47	×1
✓ 33	14/2/1988	10th Pacific Crest Trail Fifty	80,47	×1
✓ 34	4/11/2017	2nd Boundiful 24 Hours Endurance Run	80,47	×1
✓ 35	27/5/2017	9th Nanny Goat 24 Hour Race	80,47	×1
✓ 36	5/11/2016	1st Boundiful 24 Hours Endurance Run	80,47	×1
✓ 37	23/5/2015	7th Nanny Goat 24 Hour Race	80,47	×1
✓ 38	4/8/1989	Orange 24 Hour Run	75,64	×1
✓ 39	29/8/2015	1st Julian Station Full Moon 24 Hour Run	73,39	×1
✓ 40	25/5/2019	11th Nanny Goat 24 Hour Race	69,20	×1
✓ 41	28/5/2016	8th Nanny Goat 24 Hour Race	65,98	×1
✓ 42	20/1/1991	Spunky Canyon Ultra	65,18	×1
✓ 43	5/8/2017	3rd Julian Station Full Moon 24 Hour Run	64,86	×1
✓ 44	20/8/2016	2nd Julian Station Full Moon 24 Hour Run	51,89	×1
✓ 45	3/11/2018	3rd Boundiful 24 Hours Endurance Run	51,50	×1
✓ 46	2/8/1997	Orange 12 Hour Run	50,69	×1
✓ 47	2/12/2018	32nd OTHTC High Desert 50K Ultra	50,00	×1
✓ 48	3/12/2017	31st OTHTC High Desert 50K Ultra	50,00	×1
✓ 49	4/12/2016	30th OTHTC High Desert 50K Ultra	50,00	×1
✓ 50	14/3/2015	4th Marin Ultra Challenge 50 km Race	50,00	×1
51	7/12/2014	28th OTHTC High Desert 50K Ultra	50,00	×1
52	1/12/2013	27th OTHTC High Desert 50K Ultra	50,00	×1
53	27/1/2013	9th Calico Trail Run 50 km	50,00	×1
54	2/12/2012	26th OTHTC High Desert 50K Ultra	50,00	×1
55	4/12/2011	25th OTHTC High Desert 50K Ultra	50,00	×1
56	21/5/2011	18th Bishop High Sierra Ultramarathons 50 km	50,00	×1
57	6/12/2009	23rd OTHTC High Desert 50K Ultra	50,00	×1
58	3/5/2008	28th Wild Wild West 50k	50,00	×1
59	20/1/2008	4th Calico Trail Run 50 km	50,00	×1
60	2/12/2007	21st OTHTC High Desert 50K Ultra	50,00	×1
61	14/1/2007	3rd Calico Trail Run 50 km	50,00	×1
62	3/12/2006	20th OTHTC High Desert 50K Ultra	50,00	×1
63	26/3/2005	22th San Juan Trail 50 km	50,00	×1
64	26/2/2005	2nd Lake Hodges Trail Fest 50K	50,00	×1
65	16/1/2005	1st Calico Trail Run 50 km	50,00	×1
66	4/12/2004	18th OTHTC High Desert 50K Ultra	50,00	×1
67	4/5/2003	24th Wild Wild West 50k	50,00	×1
68	8/12/2002	16th OTHTC High Desert 50K Ultra	50,00	×1
69	13/2/1999	16th San Juan Trail 50 km	50,00	×1
70	12/9/1998	4th Baldy Peaks 50K	50,00	×1
71	6/9/1997	3rd Baldy Peaks 50K	50,00	×1
72	8/12/1996	10th OTHTC High Desert 50K Ultra	50,00	×1
73	10/12/1995	9th OTHTC High Desert 50K Ultra	50,00	×1
74	11/12/1994	8th OTHTC High Desert 50K Ultra	50,00	×1
75	20/8/1994	1st Baldy Peaks 50K	50,00	×1
76	18/3/1989	3rd Crown King Scramble 50K	50,00	×1