David L. Jackson
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Born : 1959
Cat. M65 Ultrarunner since 1998
16
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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 ?United States
United States49,8%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 655; Σ finishers = 1 315. 655 / 1 315 × 100 = 49.81%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races1 917 km
> 100 km8
> 160 km8
> 200 km1
Longest race217,3 km
19th Badwater Ultramarathon — 10/7/2005
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road19,7%
Trail80,3%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 10/7/2005 | 19th Badwater Ultramarathon | 217,26 | ×5 |
| ✓ 2 | 15/5/2010 | 3rd Keys100 Ultra-Marathons 100mi | 160,93 | ×4 |
| ✓ 3 | 6/10/2001 | 11th Arkansas Traveller 100 | 160,93 | ×4 |
| ✓ 4 | 9/9/2000 | 21st Wasatch Front 100 Mile | 160,93 | ×4 |
| ✓ 5 | 19/8/2000 | 18th Leadville Trail 100 Mile | 160,93 | ×4 |
| ✓ 6 | 3/6/2000 | 22nd Old Dominion 100 Mile Endurance Run | 160,93 | ×4 |
| ✓ 7 | 5/6/1999 | 21st Old Dominion 100 Mile Endurance Run | 160,93 | ×4 |
| ✓ 8 | 8/2/1998 | 6th Rocky Raccoon 100 Mile Trail Run | 160,93 | ×4 |
| ✓ 9 | 18/3/2000 | 4th Kentucky Ultra Trail Sojourn 50 Miles | 86,90 | ×2 |
| ✓ 10 | 13/3/2010 | 7th Land Between The Lakes 50 Mile Trail Run | 80,47 | ×2 |
| ✓ 11 | 4/12/1999 | 7th Kentucky Arches 50 Mile | 80,47 | ×2 |
| ✓ 12 | 6/11/1999 | 17th Mountain Masochist 50 Mile Trail Run | 80,47 | ×2 |
| ✓ 13 | 10/4/1999 | 5th Umstead Endurance Run 50 Miles | 80,47 | ×2 |
| ✓ 14 | 19/11/2005 | 2nd Dizzy Fifties - 40 Mile Trail Run | 64,37 | ×1 |
| ✓ 15 | 8/1/2005 | 5th Bandera 50 km Ultratrail | 50,00 | ×1 |
| ✓ 16 | 10/7/1999 | 5th Rattlesnake Trail 50K Ultrarun | 50,00 | ×1 |