Jan de Jong
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 : 1946
Cat. M80 Ultrarunner since 1979
5
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
15
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 ?Netherlands
Netherlands29,6%
Rank quotient ?This runner's calculation uses 5 eligible race(s): Σ(rank − 1) = 128; Σ finishers = 433. 128 / 433 × 100 = 29.56%. 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
No record for a classic ultra format
HISTORY
5 race(s)| Date | Race | Perf. | Rk | |
|---|---|---|---|---|
| 1985 | ||||
| 03.11 | 61km | 8e Schipholloop |
4:40:52 h | 32 |
| 1984 | ||||
| 04.11 | 61km | 7e Schipholloop |
4:47:41 h | 55 |
| 1981 | ||||
| 01.11 | 61km | 4e Schipholloop |
4:16:11 h | 9 |
| 1980 | ||||
| 02.11 | 61km | 3e Schipholloop |
4:27:26 h | 17 |
| 1979 | ||||
| 04.11 | 61km | 2e Schipholloop |
4:51:46 h | 20 |
| Runner | Races in common |
|---|---|
DUV-index calculation details
| # | Date | Race | Credited km | DUV-index+ |
|---|---|---|---|---|
| ✓ 1 | 3/11/1985 | 8e Schipholloop | 61,00 | ×4 |
| ✓ 2 | 4/11/1984 | 7e Schipholloop | 61,00 | ×4 |
| ✓ 3 | 1/11/1981 | 4e Schipholloop | 61,00 | ×4 |
| ✓ 4 | 2/11/1980 | 3e Schipholloop | 61,00 | ×4 |
| ✓ 5 | 4/11/1979 | 2e Schipholloop | 61,00 | ×4 |