Tong-Zhou (刘同周) Liu
External sources
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Born : 1991
Cat. M35 Ultrarunner since 2024
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
20
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
China24,5%
Rank quotient ?This runner's calculation uses 6 eligible race(s): Σ(rank − 1) = 1 366; Σ finishers = 5 580. 1 366 / 5 580 × 100 = 24.48%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed6
Km — ultra races518 km
> 100 km1
Longest race105,0 km
10th Ultimate Tsaigu Trail Kuocang - 105 km — 1/11/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
6 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 1/11/2025 | 10th Ultimate Tsaigu Trail Kuocang - 105 km | 105,00 | ×5 |
| ✓ 2 | 21/3/2026 | 8th Xihong Old Road Ultra Trail - 100 Spring | 100,00 | ×5 |
| ✓ 3 | 11/7/2025 | 9th Columbia 100 Ultra Trail Chongli Challenge Race | 100,00 | ×5 |
| ✓ 4 | 31/5/2025 | 3rd Weihai Ultra Trail 100km | 100,00 | ×5 |
| ✓ 5 | 26/10/2024 | 2nd Moganshan 65 Ultra Trail | 63,00 | ×3 |