Brian Jeffery
External sources
Loading FFA
Loading MV
FFA diagnostics
Run “Search / refresh FFA” to see each season, HTTP response, candidate and DUV comparison.
MarathonView diagnostics
Run “Refresh MV” to see login, session validation and parser status.
Cached locally. Empty refreshes never erase the last valid snapshot.
Born : 1980
Cat. M45 Ultrarunner since 2013
3
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
13
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 ?United Kingdom
United Kingdom10,7%
Rank quotient ?This runner's calculation uses 3 eligible race(s): Σ(rank − 1) = 166; Σ finishers = 1 547. 166 / 1 547 × 100 = 10.73%. A win adds 0 to the numerator. Lower is better.
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M2
Longest winning streak1
Current streak0
Records
HISTORY
3 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 26.07 | 50mi | Lakeland 50 Mile |
11:37:07 h | 166 |
| 2019 | ||||
| 31.08 | 30mi | The Conquest of Avalon 30 |
4:04:13 h | 1 🏆 |
| 2013 | ||||
| 12.05 | 33mi | Marlborough Downs Challenge |
4:15:14 h | 2 🥈 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 26/7/2025 | Lakeland 50 Mile | 80,47 | ×6 |
| ✓ 2 | 12/5/2013 | Marlborough Downs Challenge | 53,11 | ×4 |
| ✓ 3 | 31/8/2019 | The Conquest of Avalon 30 | 48,28 | ×3 |