Zi-Feng (叶子丰) Ye
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Born : 1996
Cat. M23 Ultrarunner since 2016
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
21
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 ?China
South Korea
ChinaSouth Korea31,6%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 995; Σ finishers = 3 147. 995 / 3 147 × 100 = 31.62%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races493 km
> 100 km1
Longest race107,0 km
12th TransJeju by UTMB - Jeju100K — 18/10/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road10,1%
Trail89,9%
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 18.10 | 107km | 12th TransJeju by UTMB - Jeju100K |
21:17:48 h | 350 |
| 2024 | ||||
| 02.11 | 85km | 9th Wuyishan Trail Race 85 km |
15:20:44 h | 39 |
| 07.07 | 50km | 5th Huanglong Ultra Trail - XBD 50 |
11:14:06 h | 168 |
| 25.05 | 50km | 12th DL50 Ultra Endurance Race |
7:57:09 h | 74 |
| 2023 | ||||
| 15.10 | 45km | 1st Kolon Sport Trail |
6:14:38 h | 44 |
| 02.09 | 56km | 7th Trail Mt Wugong 50 km |
12:13:09 h | 244 |
| 2017 | ||||
| 04.03 | 50km | 1st Nanjing Laoshan National Forest Park 50 Cross |
7:53:55 h | 30 |
| 2016 | ||||
| 24.09 | 50km | 5th Jiwu Hangzhou 50K |
11:48:50 h | 54 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 18/10/2025 | 12th TransJeju by UTMB - Jeju100K | 107,00 | ×5 |
| ✓ 2 | 2/11/2024 | 9th Wuyishan Trail Race 85 km | 85,00 | ×4 |
| ✓ 3 | 2/9/2023 | 7th Trail Mt Wugong 50 km | 56,00 | ×2 |
| ✓ 4 | 7/7/2024 | 5th Huanglong Ultra Trail - XBD 50 | 50,00 | ×2 |
| ✓ 5 | 25/5/2024 | 12th DL50 Ultra Endurance Race | 50,00 | ×2 |
| ✓ 6 | 4/3/2017 | 1st Nanjing Laoshan National Forest Park 50 Cross | 50,00 | ×2 |
| ✓ 7 | 24/9/2016 | 5th Jiwu Hangzhou 50K | 50,00 | ×2 |
| ✓ 8 | 15/10/2023 | 1st Kolon Sport Trail | 45,00 | ×2 |