Mike Ehrenfeucht
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 : 1973
Cat. M50 Ultrarunner since 2013
19
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
33
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 States56,7%
Rank quotient ?This runner's calculation uses 19 eligible race(s): Σ(rank − 1) = 1 720; Σ finishers = 3 033. 1 720 / 3 033 × 100 = 56.71%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed19
Km — ultra races1 445 km
> 100 km3
> 160 km2
> 24h1
Longest race160,9 km
19th The Bear 100 Mile Endurance Run — 29/9/2017
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road10,4%
Trail89,6%
HISTORY
19 race(s)| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 29/9/2017 | 19th The Bear 100 Mile Endurance Run | 160,93 | ×4 |
| ✓ 2 | 12/10/2013 | 7th Boulder 100 Mile Run | 160,93 | ×4 |
| ✓ 3 | 28/12/2016 | 32nd Across the Years, 24h | 150,36 | ×4 |
| ✓ 4 | 27/9/2015 | 6th The Bear Chase 100 km | 100,00 | ×3 |
| ✓ 5 | 11/7/2025 | 12th Chase the Moon 12 Hour Endurance Run | 82,90 | ×2 |
| ✓ 6 | 7/7/2017 | 4th Chase the Moon 12 Hour Endurance Run | 82,88 | ×2 |
| ✓ 7 | 24/8/2013 | 9th Lean Horse Ultra-Marathon 50 Mile | 80,47 | ×2 |
| ✓ 8 | 15/7/2022 | 9th Chase the Moon 12 Hour Endurance Run | 74,83 | ×2 |
| ✓ 9 | 12/6/2021 | 13th Golden Gate Dirty 30 | 52,00 | ×1 |
| ✓ 10 | 19/7/2024 | 11th Chase the Moon 12 Hour Endurance Run | 50,13 | ×1 |
| ✓ 11 | 3/5/2025 | 21st Greenland Trail Race | 50,00 | ×1 |
| ✓ 12 | 7/5/2022 | 18th Greenland Trail Race | 50,00 | ×1 |
| ✓ 13 | 28/9/2019 | 10th The Bear Chase 50 km | 50,00 | ×1 |
| ✓ 14 | 1/6/2019 | 11th Golden Gate Dirty 30 | 50,00 | ×1 |
| ✓ 15 | 2/6/2018 | 10th Golden Gate Dirty 30 | 50,00 | ×1 |
| ✓ 16 | 5/5/2018 | 14th Greenland Trail Race | 50,00 | ×1 |
| ✓ 17 | 3/6/2017 | 9th Golden Gate Dirty 30 | 50,00 | ×1 |
| ✓ 18 | 4/6/2016 | 8th Golden Gate Dirty 30 | 50,00 | ×1 |
| ✓ 19 | 27/6/2026 | 13th Chase the Moon 12 Hour Endurance Run | 49,14 | ×1 |