Yan-Nan (许晏南) Xu
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Born : 1981
Cat. M45 Ultrarunner since 2013
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
22
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
Spain
ChinaSpain41,3%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 3 511; Σ finishers = 8 507. 3 511 / 8 507 × 100 = 41.27%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races570 km
> 100 km2
Longest race108,0 km
8th Ninghai Ultra Trail - 100km — 17/10/2020
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 18.10 | 106km | 11th Ninghai Ultra Trail - 100km |
19:57:09 h | 228 |
| 2024 | ||||
| 04.07 | 55km | Val d'Aran by UTMB - Peades d'Aigua |
11:21:33 h | 1221 |
| 2023 | ||||
| 21.10 | 50.7km | 5th Yunqiu Mountain Trail - MMY 50K |
8:18:39 h | 180 |
| 2020 | ||||
| 17.10 | 108km | 8th Ninghai Ultra Trail - 100km |
20:52:23 h | 135 |
| 2019 | ||||
| 11.05 | 100km | 11th The North Face 100 China |
23:26:24 h | 474 |
| 2018 | ||||
| 22.04 | 50km | 10th The North Face 50 China |
9:14:24 h | 550 |
| 2017 | ||||
| 15.04 | 50km | 9th The North Face 50 China |
9:26:09 h | 428 |
| 2013 | ||||
| 04.05 | 50km | The North Face 50 China |
7:50:00 h | 303 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 17/10/2020 | 8th Ninghai Ultra Trail - 100km | 108,00 | ×4 |
| ✓ 2 | 18/10/2025 | 11th Ninghai Ultra Trail - 100km | 106,00 | ×4 |
| ✓ 3 | 11/5/2019 | 11th The North Face 100 China | 100,00 | ×4 |
| ✓ 4 | 4/7/2024 | Val d'Aran by UTMB - Peades d'Aigua | 55,00 | ×2 |
| ✓ 5 | 21/10/2023 | 5th Yunqiu Mountain Trail - MMY 50K | 50,70 | ×2 |
| ✓ 6 | 22/4/2018 | 10th The North Face 50 China | 50,00 | ×2 |
| ✓ 7 | 15/4/2017 | 9th The North Face 50 China | 50,00 | ×2 |
| ✓ 8 | 4/5/2013 | The North Face 50 China | 50,00 | ×2 |