David Jackson
ID 15551
Born : 1958 Cat. M65 Ultrarunner since 2000 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
1
Countries visited ?USAUnited States
57,5%
Rank quotient ?This runner's calculation uses 51 eligible race(s): Σ(rank − 1) = 3 566; Σ finishers = 6 201. 3 566 / 6 201 × 100 = 57.51%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed51
Km — ultra races3 683 km
> 100 km3
> 160 km3
> 200 km1
Longest race217,3 km
16th Badwater Ultramarathon — 23/7/2002

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road8,6%
Trail91,4%

Records

50 km5h20'55100 km13h37'1950 mi8h17'35100 mi29h07'06

HISTORY

51 race(s)
DateRacePerf.Rk
2021
12.06 50mi USA4th Wy’east Wonder 50 Mile Trail Race 14:11:14 h174
26.03 50km USA11th Badger Mountain 50 km Challenge 7:52:38 h79
2019
16.03 50km USA27th Chuckanut 50K 7:20:17 h343
2018
22.09 50km USA23rd Cle Elum Ridge 50k 7:03:16 h27
10.08 40mi USA2nd Bigfoot 40 Mile Race 12:39:23 h29
14.07 50km USA14th Grey Rock Trail Run 7:26:29 h10
30.03 50mi USA8th Badger Mountain 50 Mile Challenge 11:58:46 h57
2017
23.09 50km USA22nd Cle Elum Ridge 50k 6:36:43 h16
06.05 100km USA22nd Miwok 100k Trail Race 15:05:10 h238
22.04 50km USA7th Yakima Skyline Rim 50k 8:05:08 h86
18.03 50mi USA18th Grasslands 50 Mile Trail Run 12:36:59 h31
26.02 50km USA10th The Cowtown Marathon 5:29:02 h113
2016
24.09 50km USA21st Cle Elum Ridge 50k 6:37:01 h22
07.05 100km USA21st Miwok 100k Trail Race 15:20:00 h262
09.04 50km USA6th Gorge Waterfalls 50k 6:54:44 h100
28.02 50km USA9th The Cowtown Marathon 5:21:32 h81
09.01 50km USA16th Bandera 50 km Ultratrail 7:07:07 h99
2015
12.12 50km USA11th Rodeo Beach 50km 7:16:54 h47
26.09 50km USA20th Cle Elum Ridge 50k 7:21:46 h32
13.06 50km USA4th Rodeo Valley 50 km Trail Run 6:27:51 h45
02.05 100km USA20th Miwok 100k Trail Race 15:22:00 h288
10.01 50km USA15th Bandera 50 km Ultratrail 10:09:11 h162
2014
25.10 50mi USA8th Cactus Rose 50 Mile 14:55:31 h51
23.08 50km USA23rd Bulldog 50k Ultra Run 6:36:36 h101
14.06 50km USA3rd Rodeo Valley 50 km Trail Run 6:30:09 h24
11.01 100km trail race USA14th Bandera 100 km Ultratrail - Open race 13:37:19 h58
11.01 100km trail race USA14th Bandera 100 km Ultratrail - US Trail Championships 13:37:19 h38
2013
26.10 50mi USA7th Cactus Rose 50 Mile 13:20:13 h60
16.03 50km USA2nd Rodeo Valley 50 km Trail Run 6:31:21 h59
13.01 50km USA13th Bandera 50 km Ultratrail 6:45:27 h90
2012
11.11 50km USA1st Mt. Tam Trail Run 8:19:55 h44
27.10 100mi USA6th Cactus Rose 100 Mile 32:14:35 h37
30.06 50mi USA1st Marin Ultra Challenge 50 Mile Race 13:02:50 h43
2011
29.10 50mi USA5th Cactus Rose 50 Mile 14:21:59 h57
13.08 50km USA1st Crystal Springs 50 km Summer Trail Run 6:38:27 h25
08.01 50km USA11th Bandera 50 km Ultratrail 6:19:05 h82
2010
30.10 50mi USA4th Cactus Rose 50 Mile 15:51:31 h71
09.01 50km USA10th Bandera 50 km Ultratrail 6:29:17 h70
2008
05.01 50km USA8th Bandera 50 km Ultratrail 6:20:16 h15
2006
07.01 100km USA6th Bandera 100 km Ultratrail 14:48:13 h25
2005
15.10 50km USA21st Palo Duro 50 km Trail Run 5:20:55 h7
26.03 50mi USA6th Grasslands 50 Mile Trail Run 12:27:58 h19
2004
14.02 50km USA10th East Texas Ultra Runners 50K 7:59:45 h21
2003
15.03 50mi USA7th Kentucky Ultra Trail Sojourn 50 Miles 8:24:37 h4
11.01 50km USA3rd Bandera 50 km Ultratrail 6:22:55 h24
2002
07.12 50mi USA10th Kentucky Arches 50 Mile 8:17:35 h9
23.07 135mi USA16th Badwater Ultramarathon 47:12:30 h35
16.03 51mi USA6th Kentucky Ultra Trail Sojourn 50 Miles 9:32:48 h6
2001
01.12 50mi USA9th Kentucky Arches 50 Mile 8:43:24 h22
17.03 51mi USA5th Kentucky Ultra Trail Sojourn 50 Miles 10:27:07 h7
2000
24.06 100mi USA27th Western States 100 Mile Endurance Run 29:07:06 h172