Haiquan Yang
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.
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
China
47,6%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 1 985; Σ finishers = 4 167. 1 985 / 4 167 × 100 = 47.64%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed10
Km — ultra races714 km
Longest race100,0 km
31st Sulphur Springs Trail Run 100km — 25/5/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
10 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 25/5/2024 | 31st Sulphur Springs Trail Run 100km | 100,00 | ×4 |
| ✓ 2 | 21/11/2020 | 6th Wuyishan Trail Race 100 km | 100,00 | ×4 |
| ✓ 3 | 14/8/2020 | 4th Columbia 100 Ultra Trail Chongli Challenge Race | 100,00 | ×4 |
| ✓ 4 | 24/10/2020 | 6th Ultimate Tsaigu Trail Kuocang - 85 km | 85,00 | ×3 |
| ✓ 5 | 28/9/2024 | 1st Ultra Trail Whistler by UTMB - 70K | 69,00 | ×2 |
| ✓ 6 | 1/12/2018 | 2nd TNF 100 Ultra Trail Challenge Moganshan | 60,00 | ×2 |
| ✓ 7 | 27/5/2023 | 30th Sulphur Springs Trail Run 50km | 50,00 | ×2 |
| ✓ 8 | 18/5/2019 | 3rd Youzhou Ultra Trail 50 | 50,00 | ×2 |
| ✓ 9 | 11/5/2019 | 11th The North Face 50 China | 50,00 | ×2 |
| ✓ 10 | 27/10/2018 | 3rd TransLaoshao 50 km Trailrunning Challenge | 50,00 | ×2 |