Martin Si
ID 1782500
Born : 1971 Cat. M55 Ultrarunner since 2022 USA
10
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
21
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
48,4%
Rank quotient ?This runner's calculation uses 10 eligible race(s): Σ(rank − 1) = 467; Σ finishers = 965. 467 / 965 × 100 = 48.39%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed10
Km — ultra races540 km
Longest race80,5 km
2nd Knobstone 50 — 11/4/2026

Km per year (ultra races)

55
1 race
2022
55
1 race
2023
100
2 races
2024
150
3 races
2025
180
3 races
2026

Race types (share of distance)

Trail79,6%
Stage20,4%

Records

50 km6h40'1750 mi17h05'38

HISTORY

10 race(s)
DateRacePerf.Rk
2026
09.05 50km USA45th Ice Age Trail 50 km Run 6:40:17 h91
11.04 50mi USA2nd Knobstone 50 17:05:38 h78
21.03 50km USA29th OPSF Ultra 50 km Race 7:53:56 h15
2025
10.05 50km USA44th Ice Age Trail 50 km Run 7:28:22 h126
22.03 50km USA28th OPSF Ultra 50 km Race 6:53:39 h15
01.03 50km USA12th Monument Valley 50 km Race 8:21:49 h68
2024
30.03 50km USA4th Blood, Sweat & Beers - NV 50km Race 7:08:45 h14
02.03 50km USA11th Monument Valley 50 km Race 6:45:46 h27
2023
16.09 55km USA11th Flagstaff to Grand Canyon Stagecoach Line 55km 6:57:42 h27
2022
17.09 55km USA10th Flagstaff to Grand Canyon Stagecoach Line 55km 6:54:39 h16