David Backman
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12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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
2
Countries visited ?
Norway
Sweden
46,2%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 354; Σ finishers = 766. 354 / 766 × 100 = 46.21%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed12
Km — ultra races1 292 km
> 100 km6
> 160 km2
> 24h5
> 48h1
Longest race174,4 km
Bislett 24h hour indoor challenge — 18/11/2016
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road29,8%
Trail33,1%
?37,2%
HISTORY
12 race(s) · 2 split(s) nested| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2023 | ||||
| 23.09 | 50mi | 10:26:21 h | 7 | |
| 2022 | ||||
| 10.09 | 79.4km | 11:55:17 h | 19 | |
| 2021 | ||||
| 18.09 | 79.4km | 10:52:25 h | 22 | |
| 2016 | ||||
| 18.11 | 24h | 174.365 km | 19 | |
| 01.10 | 51km | 6:51:00 h | 23 | |
| 2014 | ||||
| 22.11 | 24h | 155.079 km | 53 | |
| 24.05 | 87km | 12:48:53 h | 67 | |
| 2013 | ||||
| 23.08 | 48h | 120.000 km | 17 | |
| 23.08 | 100km | Skövde Ultrafestival 48h - 100km Split | 17:55:22 h | 12 |
| 23.08 | 24h | Skövde Ultrafestival 48h - 24h Split | 120.000 km | 14 |
| 2012 | ||||
| 13.10 | 50km | 5:00:15 h | 72 | |
| 2011 | ||||
| 26.11 | 24h | 150.913 km | 51 | |
| 2010 | ||||
| 27.08 | 24h | 160.207 km | 9 | |
| 2009 | ||||
| 25.07 | 12h | 104.396 km | 7 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 18/11/2016 | Bislett 24h hour indoor challenge | 174,37 | ×5 |
| ✓ 2 | 27/8/2010 | Skövde Ultrafestival 24h | 160,21 | ×4 |
| ✓ 3 | 22/11/2014 | Bislett 24 hour indoor challenge | 155,08 | ×4 |
| ✓ 4 | 26/11/2011 | Bislett 24 hour indoor challenge | 150,91 | ×4 |
| ✓ 5 | 23/8/2013 | Skövde Ultrafestival 48h | 120,00 | ×3 |
| ✓ 6 | 25/7/2009 | 12h Hallsberg | 104,40 | ×3 |
| ✓ 7 | 24/5/2014 | Borås Ultra Marathon 87km | 87,00 | ×2 |
| ✓ 8 | 23/9/2023 | 4 Ultra Caballo Blanco Suecia | 80,47 | ×2 |
| ✓ 9 | 10/9/2022 | Black River Run 50 Miles | 79,40 | ×2 |
| ✓ 10 | 18/9/2021 | Black River Run 50 Miles | 79,40 | ×2 |
| ✓ 11 | 1/10/2016 | 3 Gotland Ultramarathon | 51,00 | ×1 |
| ✓ 12 | 13/10/2012 | 12th Sörmland Ultra Marathon | 50,00 | ×1 |