James Hayduk
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13
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
26
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 ?
Canada
United States
50,6%
Rank quotient ?This runner's calculation uses 13 eligible race(s): Σ(rank − 1) = 693; Σ finishers = 1 370. 693 / 1 370 × 100 = 50.58%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed13
Km — ultra races884 km
Longest race100,0 km
2nd Ultra Trail Whistler by UTMB - 100K — 27/9/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M2
🏅 Top 32
🏅 Top 3 M2
Longest winning streak0
Current streak0
HISTORY
13 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 27/9/2025 | 2nd Ultra Trail Whistler by UTMB - 100K | 100,00 | ×3 |
| ✓ 2 | 30/7/2022 | 8th Never Summer 100k | 100,00 | ×3 |
| ✓ 3 | 25/9/2021 | 4th Sangre de Cristo Ultra 100 km Race | 100,00 | ×3 |
| ✓ 4 | 12/10/2019 | 6th Indian Creek Fifties - 50 Miles | 83,69 | ×3 |
| ✓ 5 | 16/11/2019 | 13th Endurance Challenge - California Trail 50 Mile | 80,47 | ×3 |
| ✓ 6 | 3/11/2018 | 1st The Ultra Bird 6 Hour Trail Race | 59,55 | ×2 |
| ✓ 7 | 21/1/2023 | 9th Franklin Mountains Trail Run | 55,00 | ×2 |
| ✓ 8 | 17/10/2020 | 7th Indian Creek Fifties - 55 km | 55,00 | ×2 |
| ✓ 9 | 2/8/2025 | 1st Aspen Backcountry | 50,00 | ×1 |
| ✓ 10 | 16/7/2023 | 3rd Teton Mountain Runs Cody Peak 50K | 50,00 | ×1 |
| ✓ 11 | 27/3/2021 | 8th Behind the Rocks 50km Race | 50,00 | ×1 |
| ✓ 12 | 7/4/2018 | 1st English's Ridge Rumble 50 km | 50,00 | ×1 |
| ✓ 13 | 4/11/2017 | 19th Mendon 50K Trail Run | 50,00 | ×1 |