Mark Jackson
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Born : 1966
Cat. M60 Ultrarunner since 2003
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
16
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 States91,5%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 238; Σ finishers = 260. 238 / 260 × 100 = 91.54%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed5
Km — ultra races277 km
Longest race80,5 km
21st Quicksilver 50 Mile Endurance Run — 8/5/2004
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road16,9%
Trail83,1%
Wins & podiums (ultra)
🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2012 | ||||
| 21.04 | 50km | 6th Tehama Wildflowers Trail Run |
7:54:21 h | 55 |
| 2004 | ||||
| 08.05 | 50mi | 21st Quicksilver 50 Mile Endurance Run |
12:18:46 h | 52 |
| 21.03 | 50km | 3rd Stevens Creek Striders 50K |
8:11:34 h | 45 |
| 2003 | ||||
| 14.09 | 6h | 11th DSE Distance Classic 6 Hour |
46.926 km | 3 🥉 |
| 18.05 | 50km | 16th Ohlone 50K Wilderness Run |
9:19:07 h | 88 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 8/5/2004 | 21st Quicksilver 50 Mile Endurance Run | 80,47 | ×5 |
| ✓ 2 | 21/4/2012 | 6th Tehama Wildflowers Trail Run | 50,00 | ×3 |
| ✓ 3 | 21/3/2004 | 3rd Stevens Creek Striders 50K | 50,00 | ×3 |
| ✓ 4 | 18/5/2003 | 16th Ohlone 50K Wilderness Run | 50,00 | ×3 |
| ✓ 5 | 14/9/2003 | 11th DSE Distance Classic 6 Hour | 46,93 | ×2 |