Joshua Karlin
ID 1401082
Born : 1976 Cat. M50 Ultrarunner since 2019 USA
11
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
25
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
26,6%
Rank quotient ?This runner's calculation uses 11 eligible race(s): Σ(rank − 1) = 346; Σ finishers = 1 301. 346 / 1 301 × 100 = 26.59%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed11
Km — ultra races721 km
Longest race100,0 km
12th Twisted Branch Trail Run — 22/8/2026

Km per year (ultra races)

139
2 races
2022
101
2 races
2023
281
4 races
2024
2025
100
1 race
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 32
🏅 Top 3 M3
Longest winning streak0
Current streak0

Records

50 km4h41'54100 km14h28'1450 mi9h14'086 h50,18 km

HISTORY

11 race(s)
DateRacePerf.Rk
2026
22.08 100km USA12th Twisted Branch Trail Run 16:40:02 h72
2024
30.11 50km USA4th Squatchy Leftovers 50km Trail Race 5:12:46 h18
12.10 100km USA12th Tesla Hertz Run 100 km 14:28:14 h4
04.05 50mi USA12th Rock The Ridge 50-Mile Endurance Challenge 9:14:08 h43
27.01 6h USA7th Frosty Fat Sass 6 Hour Run 50.179 km11
2023
08.09 30mi USA10th Shawangunk Ridge Trail 30-mile Run 9:30:44 h44
11.03 33mi USA3rd Squatchapple 33 Mile Race 5:36:29 h2 🥈
2022
05.11 55mi USA9th The Batona 55 Mile 11:10:39 h13
18.06 50km USA8th Vegan Power 50K 5:26:16 h7
2021
27.11 50km USA1st Squatchy Leftovers 50km Trail Race 4:41:54 h2 🥈
2019
16.11 50km USA13th Endurance Challenge - California Trail 50 km 6:51:40 h141