Justin Isberg
External sources
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Born : 1989
Cat. M35 Ultrarunner since 2024
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
18
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 States40,3%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 117; Σ finishers = 290. 117 / 290 × 100 = 40.34%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed5
Km — ultra races391 km
> 100 km1
> 160 km1
Longest race160,9 km
11th Uwharrie 100 Mile Trail Run — 18/10/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 18.10 | 100mi | 11th Uwharrie 100 Mile Trail Run |
33:01:43 h | 16 |
| 20.09 | 50mi | 12th Pilot Mountain to Hanging Rock 50M Ultra |
13:04:45 h | 52 |
| 19.04 | 50km | 1st UFOREA Daytime |
7:41:01 h | 5 |
| 01.03 | 50km | 10th Conquer the Rock - Foothills 50K |
8:22:20 h | 20 |
| 2024 | ||||
| 14.04 | 50km | 13th Mountains to Sea Challenge |
6:23:25 h | 29 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 18/10/2025 | 11th Uwharrie 100 Mile Trail Run | 160,93 | ×8 |
| ✓ 2 | 20/9/2025 | 12th Pilot Mountain to Hanging Rock 50M Ultra | 80,47 | ×4 |
| ✓ 3 | 19/4/2025 | 1st UFOREA Daytime | 50,00 | ×2 |
| ✓ 4 | 1/3/2025 | 10th Conquer the Rock - Foothills 50K | 50,00 | ×2 |
| ✓ 5 | 14/4/2024 | 13th Mountains to Sea Challenge | 50,00 | ×2 |