H.J. (Ron) de Boer
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 : 1943
Cat. M80 Ultrarunner since 1976
29
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
2
Countries visited ?Netherlands
Switzerland
NetherlandsSwitzerland46,6%
Rank quotient ?This runner's calculation uses 29 eligible race(s): Σ(rank − 1) = 15 658; Σ finishers = 33 585. 15 658 / 33 585 × 100 = 46.62%. A win adds 0 to the numerator. Lower is better.
Totals
Ultras completed29
Km — ultra races2 859 km
Longest race100,0 km
45. 100 km Lauf Biel — 13/6/2003
Km per year (ultra races)
2022
2023
2024
2025
2026
Race types (share of distance)
Road97,9%
Trail2,1%
Records
HISTORY
29 race(s)| Runner | Races in common |
|---|---|