Jian-Zhang (郭建章) Guo
Born : 1982 Cat. M40 Ultrarunner since 2017 CHN
20
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
39
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 ?CHNChinaHKGHong KongTHAThailand
27,8%
Rank quotient ?This runner's calculation uses 20 eligible race(s): Σ(rank − 1) = 2 796; Σ finishers = 10 058. 2 796 / 10 058 × 100 = 27.80%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed20
Km — ultra races1 902 km
> 100 km5
> 160 km1
Longest race168,0 km

Km per year (ultra races)

103
1 race
2022
100
1 race
2023
378
3 races
2024
652
6 races
2025
197
2 races
2026

Race types (share of distance)

Trail100,0%