Luo-Jun (许罗俊) Xu
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Born : 1986
Cat. M40 Ultrarunner since 2016
16
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
30
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
3
Countries visited ?China
Hong Kong
Japan
ChinaHong KongJapan30,3%
Rank quotient ?This runner's calculation uses 16 eligible race(s): Σ(rank − 1) = 2 355; Σ finishers = 7 785. 2 355 / 7 785 × 100 = 30.25%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed16
Km — ultra races1 152 km
> 100 km2
Longest race109,0 km
16th Shinetsu Five Mountains Trail 110km — 15/9/2024
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
16 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/9/2024 | 16th Shinetsu Five Mountains Trail 110km | 109,00 | ×3 |
| ✓ 2 | 11/11/2023 | 10th TransLantau 100 by UTMB | 103,00 | ×3 |
| ✓ 3 | 15/12/2018 | 6th The North Face 100 Hong Kong | 100,00 | ×3 |
| ✓ 4 | 19/5/2018 | 1st Jiangnan 100 km Run | 100,00 | ×3 |
| ✓ 5 | 27/1/2018 | 8th Hong Kong 100 Ultra Trail Race | 100,00 | ×3 |
| ✓ 6 | 19/3/2016 | 3rd Hangzhou 100 Ultra Trail Race | 100,00 | ×3 |
| ✓ 7 | 13/10/2018 | 7th Raleigh Challenge Wilson Trail - Whole Course | 76,10 | ×2 |
| ✓ 8 | 8/12/2019 | 6th Izu Trail Journey | 71,70 | ×2 |
| ✓ 9 | 19/10/2024 | 10th Ninghai Ultra Trail - 50km | 60,00 | ×2 |
| ✓ 10 | 15/3/2025 | 11th Mt. Hiei Int. 50 km Trail Run | 50,00 | ×1 |
| ✓ 11 | 2/1/2021 | 1st 1390 Archipelago Trail - 50km | 50,00 | ×1 |
| ✓ 12 | 29/12/2019 | 1st Tang Poetry Road Ultra Trail - Tianmu Shan | 50,00 | ×1 |
| ✓ 13 | 22/12/2019 | 1st Nanjing Zijinshan Trail Challenge | 46,00 | ×1 |
| ✓ 14 | 2/5/2017 | 1st Yading Kora Ultra | 46,00 | ×1 |
| ✓ 15 | 3/2/2025 | 3rd XiShi 100 Ultra Trail in The DongBai Mountain | 45,00 | ×1 |
| ✓ 16 | 15/10/2023 | 1st Kolon Sport Trail | 45,00 | ×1 |