William Koehrsen
External sources
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Born : 1996
Cat. M23 Ultrarunner since 2017
8
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
26
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 States4,1%
Rank quotient ?This runner's calculation uses 8 eligible race(s): Σ(rank − 1) = 13; Σ finishers = 316. 13 / 316 × 100 = 4.11%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed8
Km — ultra races834 km
> 100 km5
> 160 km2
Longest race160,9 km
26th Potawatomi 100 Mile Trail Run — 11/4/2026
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road25,1%
Trail65,3%
Elim.9,6%
Wins & podiums (ultra)
🏆 Win3
🏆 Win M3
🏅 Top 36
🏅 Top 3 M6
Longest winning streak2
Current streak2
HISTORY
8 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2026 | ||||
| 12.09 | 12h | 6th Timely Nonsense - 12h |
119.976 km | 1 🏆 |
| 11.04 | 100mi | 26th Potawatomi 100 Mile Trail Run |
22:18:40 h | 1 🏆 |
| 2019 | ||||
| 04.04 | 100mi | 19th Potawatomi 100 Mile Trail Run |
26:58:54 h | 5 |
| 2017 | ||||
| 26.08 | 15h | 4th Painful Elimination |
80.145 km | 5 |
| 15.04 | 12h | 2nd Locomotion 12 Hour Run |
102.998 km | 2 🥈 |
| 25.03 | 33mi | 18th Oak Mountain 50km Race |
4:53:26 h | 1 🏆 |
| 04.03 | 12h | 11th Delano Park 12 Hour Run |
106.216 km | 3 🥉 |
| 18.02 | 50km | 11th Black Warrior 50K |
5:01:55 h | 3 🥉 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 11/4/2026 | 26th Potawatomi 100 Mile Trail Run | 160,93 | ×6 |
| ✓ 2 | 4/4/2019 | 19th Potawatomi 100 Mile Trail Run | 160,93 | ×6 |
| ✓ 3 | 12/9/2026 | 6th Timely Nonsense - 12h | 119,98 | ×4 |
| ✓ 4 | 4/3/2017 | 11th Delano Park 12 Hour Run | 106,22 | ×4 |
| ✓ 5 | 15/4/2017 | 2nd Locomotion 12 Hour Run | 103,00 | ×3 |
| ✓ 6 | 26/8/2017 | 4th Painful Elimination | 80,15 | ×3 |
| ✓ 7 | 25/3/2017 | 18th Oak Mountain 50km Race | 53,11 | ×2 |
| ✓ 8 | 18/2/2017 | 11th Black Warrior 50K | 50,00 | ×1 |