David Butler
ID 385838
Born : 1954 Cat. M70 Ultrarunner since 2010 USA
9
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
19
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 ?USAUnited States
56,4%
Rank quotient ?This runner's calculation uses 9 eligible race(s): Σ(rank − 1) = 620; Σ finishers = 1 100. 620 / 1 100 × 100 = 56.36%. A win adds 0 to the numerator. Lower is better.