Jason Johnson
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Born : 1975
Cat. M50 Ultrarunner since 2015
16
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
31
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 States70,6%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 1 457; Σ finishers = 2 063. 1 457 / 2 063 × 100 = 70.63%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races1 216 km
> 100 km2
> 160 km1
> 200 km1
Longest race201,2 km
5th Cocodona Sedona Canyons — 7/5/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road4,1%
Trail95,9%
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 7/5/2025 | 5th Cocodona Sedona Canyons | 201,17 | ×6 |
| ✓ 2 | 29/12/2018 | 10th Tuscobia Winter 80 Mile Ultramarathon | 128,75 | ×4 |
| ✓ 3 | 6/2/2021 | 29th Rocky Raccoon 100 km Trail Run | 100,00 | ×3 |
| ✓ 4 | 8/3/2025 | 13th Marin Ultra Challenge 50 Mile Race | 80,47 | ×2 |
| ✓ 5 | 25/1/2025 | 2nd Monterey Ultra | 80,47 | ×2 |
| ✓ 6 | 30/9/2023 | 41st Dick Collins Firetrails 50 Mile | 80,47 | ×2 |
| ✓ 7 | 10/3/2018 | 7th Marin Ultra Challenge 50 Mile Race | 80,47 | ×2 |
| ✓ 8 | 11/1/2020 | 2nd Saint Croix Winter Ultra | 64,37 | ×2 |
| ✓ 9 | 3/8/2024 | 13th Rodeo Valley 50 km Trail Run | 50,00 | ×1 |
| ✓ 10 | 6/4/2024 | 15th Diablo Trails Challenge | 50,00 | ×1 |
| ✓ 11 | 24/2/2024 | 1st The Big Alta | 50,00 | ×1 |
| ✓ 12 | 27/1/2024 | 9th Clearwater Running Festival 50k Ultra | 50,00 | ×1 |
| ✓ 13 | 28/1/2023 | 11th Fort Ord 50K Trail Run | 50,00 | ×1 |
| ✓ 14 | 12/3/2022 | 10th Marin Ultra Challenge 50 km Race | 50,00 | ×1 |
| ✓ 15 | 9/3/2019 | 8th Marin Ultra Challenge 50 km Race | 50,00 | ×1 |
| ✓ 16 | 4/7/2015 | 22nd Afton Trail Run 50K | 50,00 | ×1 |