James Griggs
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 : 1956
Cat. M70 Ultrarunner since 1985
3
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
16
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 States
United States55,8%
Rank quotient ?This runner's calculation uses 3 eligible race(s): Σ(rank − 1) = 29; Σ finishers = 52. 29 / 52 × 100 = 55.77%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed3
Km — ultra races292 km
> 100 km1
> 24h1
Longest race146,0 km
2nd Redwood Empire 24 Hour Run — 16/3/1985
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road77,6%
Trail22,4%
Wins & podiums (ultra)
🏆 Win1
🏆 Win M1
🏅 Top 31
🏅 Top 3 M1
Longest winning streak1
Current streak1
Records
HISTORY
3 race(s) · 2 split(s) nested| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1988 | ||||
| 05.11 | 40.6mi | Freshwater to Bridgeville Ultra Run |
6:41:55 h | 1 🏆 |
| 1985 | ||||
| 20.10 | 50mi | Far Western 50 Mile |
8:46:12 h | 13 |
| 16.03 | 24h | 2nd Redwood Empire 24 Hour Run |
146.047 km | 18 |
| 16.03 | 50mi | 2nd Redwood Empire 24 Hour Run - 50mi Split | 10:37:29 h | 26 |
| 16.03 | 100km | 2nd Redwood Empire 24 Hour Run - 100km Split | 13:40:24 h | 23 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 16/3/1985 | 2nd Redwood Empire 24 Hour Run | 146,05 | ×9 |
| ✓ 2 | 20/10/1985 | Far Western 50 Mile | 80,47 | ×5 |
| ✓ 3 | 5/11/1988 | Freshwater to Bridgeville Ultra Run | 65,34 | ×4 |