John (Jack) Brown
Born : 1962 Cat. M60 Ultrarunner since 2008 GBR
15
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
31
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 ?GBRUnited Kingdom
22,6%
Rank quotient ?This runner's calculation uses 15 eligible race(s): Σ(rank − 1) = 372; Σ finishers = 1 649. 372 / 1 649 × 100 = 22.56%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed16
Km — ultra races1 222 km
> 100 km3
> 24h1
Longest race153,0 km

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road4,1%
Trail86,8%
Stage9,1%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M3
🏅 Top 37
🏅 Top 3 M7
Longest winning streak1
Current streak0