David Blaylock

Born : 1942 Cat. M80 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

66,5%

Rank quotient ?This runner's calculation uses 78 eligible race(s): Σ(rank − 1) = 2 455; Σ finishers = 3 690. 2 455 / 3 690 × 100 = 66.53%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed78

Km — ultra races12 871 km

> 100 km71

> 160 km70

> 200 km4

> 24h11

> 48h8

Longest race453,2 km

6th Six Days in the Dome - The Redux — 16/6/2023

Km per year (ultra races)

1 234

2022

936

2023

1 017

2024

597

2025

162

2026

Race types (share of distance)

Road39,8%

Trail45,8%

?14,4%

Wins & podiums (ultra)

🏆 Win2

🏆 Win M2

🏅 Top 33

🏅 Top 3 M5

Longest winning streak1

Current streak0

Records

100 km23h20'07 50 mi13h03'04 100 mi25h07'00 24 h88,51 km 48 h172,33 km 6 d453,21 km

HISTORY

78 race(s) · 7 split(s) nested

Date		Race	Perf.	Rk
2026
22.06	6d	9th Six Days in the Dome - The Redux	161.861 km	11
2025
10.10	100mi	1st The Biggest Little Ultra - 100 mile	40:36:02 h	12
23.06	6d	8th Six Days in the Dome - The Redux	275.385 km	20
23.06	48h	8th Six Days in the Dome - The Redux 6d - 48h Split	129.045 km	19
23.06	72h	8th Six Days in the Dome - The Redux 6d - 72h Split	173.390 km	19
14.02	100mi	12th Jackpot Ultra Running Festival 100 Mile Race - US Championship	37:42:27 h	18
2024
28.12	100mi	41th Across The Years, 100mi	2d 04:07:04 h	69
22.11	100mi	6th Fat Ox 100 Mile Run	40:23:21 h	15
29.08	100mi	1st Front Range Ultra Dayze 100Miles	45:53:49 h	16
17.06	6d	7th Six Days in the Dome - The Redux	372.945 km	15
17.06	100km	7th Six Days in the Dome - The Redux - 100km Split	29:08:08 h	17
17.06	100mi	7th Six Days in the Dome - The Redux - 100mi Split	2d 04:23:58 h	17
17.02	100mi	11th Jackpot Ultra Running Festival 100 Mile Race - US Championship	35:23:32 h	32
2023
31.12	100mi	39th Across The Years, 100mi	38:53:27 h	53
17.11	100mi	5th Fat Ox 100 Mile Run	41:01:24 h	11
16.06	6d	6th Six Days in the Dome - The Redux	453.211 km	11
16.06	50mi	6th Six Days in the Dome - The Redux 50mi Split	19:55:39 h	16
16.06	100km	6th Six Days in the Dome - The Redux 100km Split	27:05:58 h	17
16.06	100mi	6th Six Days in the Dome - The Redux 100mi Split	2d 00:20:46 h	16
04.03	100mi	10th Jackpot Ultra Running Festival 100 Mile Race - US Championship	29:47:29 h	27
2022
31.12	100mi	38th Across The Years, 100mi	35:40:14 h	21
02.12	100mi	4th Fat Ox 100 Mile Run	35:18:29 h	11
19.06	200km	5th Six Days in the Dome - The Redux 200km Splitt	2d 22:14:25 h	13
19.06	6d	5th Six Days in the Dome - The Redux	390.684 km	10
20.02	100mi	9th Jackpot Ultra Running Festival 100 Mile Race - US Championship	31:56:28 h	42
02.01	100mi	37th Across The Years, 100mi	33:00:28 h	11
2021
31.07	100mi	3rd Badger Trail Races by Ten Junk Miles Racing	34:09:31 h	85
2020
14.02	100mi	7th Jackpot Ultra Running Festival 100 Mile Race - US Championship	29:27:08 h	23
04.01	100mi	35th Across The Years, 100mi	29:43:03 h	10
2019
02.11	100mi	3rd Day of the Dead Running Series - 100 Miles Run	32:36:43 h	1 🏆
05.10	100km	2nd Dream Chaser 100 km Run	23:20:07 h	6
31.08	50mi	2nd Lhotse 200 - 50 Mile Run	17:10:56 h	3 🥉
27.04	24h	2nd Fiesta Series 24 Hours	88.513 km	1 🏆
2018
30.12	48h	34th Across the Years, 48h	165.570 km	30
01.12	100mi	1st Fiesta Series 100 Miles	28:44:21 h	4
19.10	100mi	13th Pony Express Trail 100 Mile	29:40:26 h	10
18.08	100mi	8th Run-de-Vous 100 Mile Endurance Run	30:31:22 h	5
03.08	36h	4th Holston River Endurance Challenge - 36 Hour Run	102.595 km	20
04.05	100mi	8th Salt Flats 100 Mile	32:50:55 h	26
23.03	100mi	7th Pulse Endurance Runs (Pickled Feet) 100 Mile	30:14:53 h	11
17.02	100mi	5th Jackpot Ultra Running Festival 100 Mile Race	28:51:50 h	23
2017
20.10	100mi	12th Pony Express Trail 100 Mile	29:46:24 h	17
19.08	100mi	7th Run-de-Vous 100 Mile Endurance Run	29:54:24 h	8
28.04	100mi	7th Salt Flats 100 Mile	31:49:45 h	25
24.03	100mi	6th Pulse Endurance Runs (Pickled Feet) 100 Mile	30:19:51 h	5
18.02	100mi	4th Jackpot Ultra Running Festival 100 Mile Race	27:52:22 h	16
2016
31.12	48h	32nd Across the Years, 48h	172.327 km	10
17.12	50mi	5th Houston Half Hundred 50 Mile Ultra	14:28:29 h	11
27.08	100mi	12th Lean Horse Ultra-Marathon 100 Mile	29:21:00 h	41
29.04	100mi	6th Salt Flats 100 Mile	35:25:28 h	28
13.02	100mi	3rd Jackpot Ultra Running Festival 100 Mile Race	29:30:47 h	30
2015
31.12	48h	31st Across the Years, 48h	163.879 km	19
19.09	100mi	5th Yellowstone-Teton 100 Mile Endurance Run	29:17:11 h	14
23.05	100mi	2nd Booneville Backroads Ultra 100 Mile	31:30:49 h	9
24.04	100mi	5th Salt Flats 100 Mile	32:35:28 h	27
14.02	100mi	2nd Jackpot Ultra Running Festival 100 Mile Race	26:43:05 h	38
2014
20.09	100mi	4th Yellowstone-Teton 100 Mile Endurance Run	28:41:00 h	20
14.06	100mi	2nd Bryce 100 Mile Trail Run	34:59:03 h	82
17.05	50mi	1st Grand Canyon 50 Mile	15:46:00 h	26
01.02	100mi	22nd Rocky Raccoon 100 Mile Trail Run	28:59:54 h	245
2013
14.12	100mi	4th The Bartram Forest 100 Mile Race	28:11:27 h	25
05.10	100mi	3rd Yellowstone-Teton 100 Mile Endurance Run	25:33:04 h	17
31.05	100mi	1st Bryce 100 Mile Trail Run	33:37:24 h	86
2012
15.12	100mi	3rd The Bartram Forest 100 Mile Race	27:29:42 h	15
19.10	100mi	7th Pony Express Trail 100 Mile	28:30:22 h	14
13.10	100mi	6th Boulder 100 Mile Run	25:07:00 h	11
11.05	100mi	1st The Zion 100 Mile Run	32:30:52 h	52
2011
15.10	100mi	5th Boulder 100 Mile Run	28:28:00 h	13
26.03	100mi	5th 24 Hours of Utah - 100 mile race	28:18:00 h	8
2010
27.03	100mi	4th 24 Hours of Utah - 100 mile race	29:19:00 h	9
2009
27.06	24h	3rd 24 Hours of Laramie	85.455 km	11
2008
06.09	100mi	29th Wasatch Front 100 Mile	34:07:24 h	124
2007
08.09	100mi	28th Wasatch Front 100 Mile	33:31:47 h	112
2003
06.09	100mi	24th Wasatch Front 100 Mile	31:51:24 h	60
2002
07.09	100mi	23rd Wasatch Front 100 Mile	34:05:21 h	95
2001
08.09	100mi	22nd Wasatch Front 100 Mile	32:41:25 h	71
2000
09.09	100mi	21st Wasatch Front 100 Mile	33:48:58 h	96
1998
12.09	100mi	19th Wasatch Front 100 Mile	33:35:00 h	105
1996
18.05	50mi	5th Lost Boys 50 Mile Trail Run	13:03:04 h	64
1995
08.09	100mi	16th Wasatch Front 100 Mile	31:05:14 h	56
1994
09.09	100mi	15th Wasatch Front 100 Mile	29:23:46 h	45
1993
10.09	100mi	14th Wasatch Front 100 Mile	27:56:02 h	17
1992
11.09	100mi	13th Wasatch Front 100 Mile	28:25:37 h	31
1991
13.09	100mi	12th Wasatch Front 100 Mile	30:55:08 h	25
Unknown date
—	100mi	13th Jackpot Ultra Running Festival 100 Mile Race - US Championship	43:13:23 h	24

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	16/6/2023	6th Six Days in the Dome - The Redux	453,21	×5
✓ 2	19/6/2022	5th Six Days in the Dome - The Redux	390,68	×4
✓ 3	17/6/2024	7th Six Days in the Dome - The Redux	372,95	×4
✓ 4	23/6/2025	8th Six Days in the Dome - The Redux	275,39	×3
✓ 5	31/12/2016	32nd Across the Years, 48h	172,33	×2
✓ 6	30/12/2018	34th Across the Years, 48h	165,57	×1
✓ 7	31/12/2015	31st Across the Years, 48h	163,88	×1
✓ 8	22/6/2026	9th Six Days in the Dome - The Redux	161,86	×1
✓ 9	10/10/2025	1st The Biggest Little Ultra - 100 mile	160,93	×1
✓ 10	14/2/2025	12th Jackpot Ultra Running Festival 100 Mile Race - US Championship	160,93	×1
✓ 11	28/12/2024	41th Across The Years, 100mi	160,93	×1
✓ 12	22/11/2024	6th Fat Ox 100 Mile Run	160,93	×1
✓ 13	29/8/2024	1st Front Range Ultra Dayze 100Miles	160,93	×1
✓ 14	17/2/2024	11th Jackpot Ultra Running Festival 100 Mile Race - US Championship	160,93	×1
✓ 15	31/12/2023	39th Across The Years, 100mi	160,93	×1
✓ 16	17/11/2023	5th Fat Ox 100 Mile Run	160,93	×1
✓ 17	4/3/2023	10th Jackpot Ultra Running Festival 100 Mile Race - US Championship	160,93	×1
✓ 18	31/12/2022	38th Across The Years, 100mi	160,93	×1
✓ 19	2/12/2022	4th Fat Ox 100 Mile Run	160,93	×1
✓ 20	20/2/2022	9th Jackpot Ultra Running Festival 100 Mile Race - US Championship	160,93	×1
✓ 21	2/1/2022	37th Across The Years, 100mi	160,93	×1
✓ 22	31/7/2021	3rd Badger Trail Races by Ten Junk Miles Racing	160,93	×1
✓ 23	14/2/2020	7th Jackpot Ultra Running Festival 100 Mile Race - US Championship	160,93	×1
✓ 24	4/1/2020	35th Across The Years, 100mi	160,93	×1
✓ 25	2/11/2019	3rd Day of the Dead Running Series - 100 Miles Run	160,93	×1
✓ 26	1/12/2018	1st Fiesta Series 100 Miles	160,93	×1
✓ 27	19/10/2018	13th Pony Express Trail 100 Mile	160,93	×1
✓ 28	18/8/2018	8th Run-de-Vous 100 Mile Endurance Run	160,93	×1
✓ 29	4/5/2018	8th Salt Flats 100 Mile	160,93	×1
✓ 30	23/3/2018	7th Pulse Endurance Runs (Pickled Feet) 100 Mile	160,93	×1
✓ 31	17/2/2018	5th Jackpot Ultra Running Festival 100 Mile Race	160,93	×1
✓ 32	20/10/2017	12th Pony Express Trail 100 Mile	160,93	×1
✓ 33	19/8/2017	7th Run-de-Vous 100 Mile Endurance Run	160,93	×1
✓ 34	28/4/2017	7th Salt Flats 100 Mile	160,93	×1
✓ 35	24/3/2017	6th Pulse Endurance Runs (Pickled Feet) 100 Mile	160,93	×1
✓ 36	18/2/2017	4th Jackpot Ultra Running Festival 100 Mile Race	160,93	×1
✓ 37	27/8/2016	12th Lean Horse Ultra-Marathon 100 Mile	160,93	×1
✓ 38	29/4/2016	6th Salt Flats 100 Mile	160,93	×1
✓ 39	13/2/2016	3rd Jackpot Ultra Running Festival 100 Mile Race	160,93	×1
✓ 40	19/9/2015	5th Yellowstone-Teton 100 Mile Endurance Run	160,93	×1
✓ 41	23/5/2015	2nd Booneville Backroads Ultra 100 Mile	160,93	×1
✓ 42	24/4/2015	5th Salt Flats 100 Mile	160,93	×1
✓ 43	14/2/2015	2nd Jackpot Ultra Running Festival 100 Mile Race	160,93	×1
✓ 44	20/9/2014	4th Yellowstone-Teton 100 Mile Endurance Run	160,93	×1
✓ 45	14/6/2014	2nd Bryce 100 Mile Trail Run	160,93	×1
✓ 46	1/2/2014	22nd Rocky Raccoon 100 Mile Trail Run	160,93	×1
✓ 47	14/12/2013	4th The Bartram Forest 100 Mile Race	160,93	×1
✓ 48	5/10/2013	3rd Yellowstone-Teton 100 Mile Endurance Run	160,93	×1
✓ 49	31/5/2013	1st Bryce 100 Mile Trail Run	160,93	×1
✓ 50	15/12/2012	3rd The Bartram Forest 100 Mile Race	160,93	×1
✓ 51	19/10/2012	7th Pony Express Trail 100 Mile	160,93	×1
✓ 52	13/10/2012	6th Boulder 100 Mile Run	160,93	×1
✓ 53	11/5/2012	1st The Zion 100 Mile Run	160,93	×1
✓ 54	15/10/2011	5th Boulder 100 Mile Run	160,93	×1
✓ 55	26/3/2011	5th 24 Hours of Utah - 100 mile race	160,93	×1
✓ 56	27/3/2010	4th 24 Hours of Utah - 100 mile race	160,93	×1
✓ 57	6/9/2008	29th Wasatch Front 100 Mile	160,93	×1
✓ 58	8/9/2007	28th Wasatch Front 100 Mile	160,93	×1
✓ 59	6/9/2003	24th Wasatch Front 100 Mile	160,93	×1
✓ 60	7/9/2002	23rd Wasatch Front 100 Mile	160,93	×1
✓ 61	8/9/2001	22nd Wasatch Front 100 Mile	160,93	×1
✓ 62	9/9/2000	21st Wasatch Front 100 Mile	160,93	×1
✓ 63	12/9/1998	19th Wasatch Front 100 Mile	160,93	×1
✓ 64	8/9/1995	16th Wasatch Front 100 Mile	160,93	×1
✓ 65	9/9/1994	15th Wasatch Front 100 Mile	160,93	×1
✓ 66	10/9/1993	14th Wasatch Front 100 Mile	160,93	×1
✓ 67	11/9/1992	13th Wasatch Front 100 Mile	160,93	×1
✓ 68	13/9/1991	12th Wasatch Front 100 Mile	160,93	×1
✓ 69	—	13th Jackpot Ultra Running Festival 100 Mile Race - US Championship	160,93	×1
✓ 70	3/8/2018	4th Holston River Endurance Challenge - 36 Hour Run	102,60	×1
✓ 71	5/10/2019	2nd Dream Chaser 100 km Run	100,00	×1
✓ 72	27/4/2019	2nd Fiesta Series 24 Hours	88,51	×1
✓ 73	27/6/2009	3rd 24 Hours of Laramie	85,46	×1
✓ 74	31/8/2019	2nd Lhotse 200 - 50 Mile Run	80,47	—
✓ 75	17/12/2016	5th Houston Half Hundred 50 Mile Ultra	80,47	—
✓ 76	17/5/2014	1st Grand Canyon 50 Mile	80,47	—
✓ 77	18/5/1996	5th Lost Boys 50 Mile Trail Run	80,47	—