Ross Bielak
ID 148804
Born : 1971 Cat. M55 Ultrarunner since 2010 USA
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
44
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 ?FRAFranceUSAUnited States
84,1%
Rank quotient ?This runner's calculation uses 23 eligible race(s): Σ(rank − 1) = 4 696; Σ finishers = 5 583. 4 696 / 5 583 × 100 = 84.11%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed23
Km — ultra races2 551 km
> 100 km10
> 160 km10
> 24h2
Longest race171,0 km
16ème Ultra Trail Tour du Mont Blanc (UTMB) — 31/8/2018

Km per year (ultra races)

161
1 race
2022
2023
161
1 race
2024
2025
70
1 race
2026

Race types (share of distance)

Road5,7%
Trail94,3%

Records

50 km6h51'48100 km18h55'1350 mi11h58'50100 mi29h08'4124 h80,47 km

HISTORY

23 race(s)
DateRacePerf.Rk
2026
21.02 15h USA9th Stories Ultra 15 Hour Run 69.604 km15
2024
13.09 100mi USA18th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run 35:48:45 h244
2022
09.09 100mi USA43th Wasatch Front 100 Mile 35:11:49 h134
2019
12.10 52mi USA6th Indian Creek Fifties - 50 Miles 13:55:00 h18
13.04 24h USA6th 24 Hours of Palmer Lake Fun Run 80.467 km46
2018
13.10 55km USA5th Indian Creek Fifties - 55 km 9:22:55 h75
31.08 171km FRA16ème Ultra Trail Tour du Mont Blanc 44:55:03 h1433
08.07 50mi USA11th Leadville Silver Rush 50 Mile Run 13:07:10 h322
21.04 24h USA5th 24 Hours of Palmer Lake Fun Run 65.983 km82
2017
07.10 100mi USA4th Cloudsplitter 100 - 100 Mile Run 39:46:22 h31
07.05 50km USA13th Greenland Trail Race 7:19:41 h76
2016
15.10 55km USA3rd Indian Creek Fifties - 55 km 10:15:00 h111
25.06 100mi USA43rd Western States 100 Mile Endurance Run 29:54:08 h277
2015
18.07 100mi USA27th Vermont 100 Mile Endurance Race 29:34:38 h218
2014
06.09 100km USA4th Ultra Race of Champions (UROC) 100K 18:55:13 h55
01.02 100mi USA22nd Rocky Raccoon 100 Mile Trail Run 29:23:11 h262
2013
26.10 100mi USA11th Javelina Jundred 100 Mile Endurance Run 29:45:23 h153
2012
27.10 100mi USA10th Javelina Jundred 100 Mile Endurance Run 29:08:41 h142
15.09 50mi USA6th Run Rabbit Run 50 Mile UltraMarathon 14:39:00 h127
15.07 50mi USA5th Leadville Silver Rush 50 Mile Run 11:58:50 h286
05.05 50km USA8th Greenland Trail Race 6:51:48 h118
2010
21.08 100mi USA28th Leadville Trail 100 Mile 29:59:14 h363
18.07 50mi USA3rd Leadville Silver Rush 50 Mile Run 12:00:22 h131