Chao-Chen Jiang
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
6
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 ?
China
55,2%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 1 573; Σ finishers = 2 852. 1 573 / 2 852 × 100 = 55.15%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races320 km
Longest race70,0 km
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
6 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 11.04 | 50km | 7:57:47 h | 363 | |
| 2025 | ||||
| 25.10 | 50km | 11:01:31 h | 132 | |
| 2024 | ||||
| 13.07 | 70km | 14:50:43 h | 677 | |
| 2023 | ||||
| 26.08 | 50km | 12:15:48 h | 253 | |
| 2022 | ||||
| 01.10 | 50km | 12:25:09 h | 51 | |
| 2021 | ||||
| 23.05 | 50km | 11:23:43 h | 103 | |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 13/7/2024 | 8th Columbia 70 Ultra Trail Chongli Challenge Race | 70,00 | ×4 |
| ✓ 2 | 11/4/2026 | 4th Ultra Trail XiaHuaYuan 50km | 50,00 | ×3 |
| ✓ 3 | 25/10/2025 | 1st Jingxi Ancient Trail Run 50 | 50,00 | ×3 |
| ✓ 4 | 26/8/2023 | 4th Ultra Trail Mount Haituo - UTMH 50km | 50,00 | ×3 |
| ✓ 5 | 1/10/2022 | 1st BeiJing Xiangshan 50 Ultra Trail | 50,00 | ×3 |
| ✓ 6 | 23/5/2021 | 4th Ultra Trail Mount Yanyu - UTMYY 50 | 50,00 | ×3 |