Derek Ehrnschwender
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 : 1993
Cat. M23 Ultrarunner since 2024
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 States
United States33,9%
Rank quotient ?This runner's calculation uses 3 eligible race(s): Σ(rank − 1) = 59; Σ finishers = 174. 59 / 174 × 100 = 33.91%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed3
Km — ultra races212 km
Longest race80,5 km
4th Jigger Johnson 50M — 15/8/2025
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Trail100,0%
Records
HISTORY
3 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 15.08 | 50mi | 4th Jigger Johnson 50M |
21:53:09 h | 15 |
| 2024 | ||||
| 07.12 | 32mi | 14th TARC Fells Trail Ultra Winter 32 Mile |
6:56:00 h | 27 |
| 19.07 | 50mi | 3rd Jigger Johnson 50M |
20:57:36 h | 20 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 15/8/2025 | 4th Jigger Johnson 50M | 80,47 | ×6 |
| ✓ 2 | 19/7/2024 | 3rd Jigger Johnson 50M | 80,47 | ×6 |
| ✓ 3 | 7/12/2024 | 14th TARC Fells Trail Ultra Winter 32 Mile | 51,50 | ×3 |