John Zollinger
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Born : 1969
Cat. M55 Ultrarunner since 1998
10
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 States49,7%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 2 445; Σ finishers = 4 916. 2 445 / 4 916 × 100 = 49.74%. 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%
Records
HISTORY
10 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 2025 | ||||
| 22.11 | 50mi | 63rd JFK 50 Mile |
11:17:29 h | 742 |
| 2024 | ||||
| 23.11 | 50mi | 62nd JFK 50 Mile |
10:38:45 h | 627 |
| 19.01 | 50mi | 9th Southern Tour 50 Mile Ultra Race |
10:20:54 h | 30 |
| 2019 | ||||
| 23.11 | 50mi | 57th JFK 50 Mile |
10:31:18 h | 468 |
| 2018 | ||||
| 17.11 | 50mi | 56th JFK 50 Mile |
9:34:02 h | 185 |
| 14.04 | 50mi | 9th New Jersey Ultra Festival 50 Mile Race |
15:01:39 h | 8 |
| 1999 | ||||
| 20.11 | 50mi | 37th JFK 50 Mile |
9:57:51 h | 345 |
| 02.01 | 50km | 6th Atlanta Fat Ass 50K |
4:10:30 h | 5 |
| 1998 | ||||
| 21.03 | 50mi | 12th Crown King Scramble 50M |
9:58:31 h | 15 |
| 04.01 | 50mi | 1st Phoenix National Trail 50 Mile Endurance Run |
10:35:35 h | 30 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 22/11/2025 | 63rd JFK 50 Mile | 80,47 | ×3 |
| ✓ 2 | 23/11/2024 | 62nd JFK 50 Mile | 80,47 | ×3 |
| ✓ 3 | 19/1/2024 | 9th Southern Tour 50 Mile Ultra Race | 80,47 | ×3 |
| ✓ 4 | 23/11/2019 | 57th JFK 50 Mile | 80,47 | ×3 |
| ✓ 5 | 17/11/2018 | 56th JFK 50 Mile | 80,47 | ×3 |
| ✓ 6 | 14/4/2018 | 9th New Jersey Ultra Festival 50 Mile Race | 80,47 | ×3 |
| ✓ 7 | 20/11/1999 | 37th JFK 50 Mile | 80,47 | ×3 |
| ✓ 8 | 21/3/1998 | 12th Crown King Scramble 50M | 80,47 | ×3 |
| ✓ 9 | 4/1/1998 | 1st Phoenix National Trail 50 Mile Endurance Run | 80,47 | ×3 |
| ✓ 10 | 2/1/1999 | 6th Atlanta Fat Ass 50K | 50,00 | ×1 |