Jason Emberger
ID 381034
Born : 1984 Cat. M40 Ultrarunner since 2012 USA
43
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
1
Countries visited ?USAUnited States
38,0%
Rank quotient ?This runner's calculation uses 43 eligible race(s): Σ(rank − 1) = 2 116; Σ finishers = 5 568. 2 116 / 5 568 × 100 = 38.00%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed43
Km — ultra races3 736 km
> 100 km10
> 160 km10
Longest race170,6 km
12th Cruel Jewel 100 Mile — 18/5/2024

Km per year (ultra races)

285
3 races
2022
335
4 races
2023
235
2 races
2024
50
1 race
2025
100
2 races
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km4h36'3750 mi9h01'35100 mi26h12'40

HISTORY

43 race(s)
DateRacePerf.Rk
2026
21.03 50km USA19th Terrapin Mountain 50 km Race 7:28:27 h61
14.02 50km USA31st Holiday Lake 50K++ 6:43:15 h59
2025
01.11 50km USA43rd Mountain Masochist 50km Trail Run 8:30:07 h48
2024
18.05 106mi USA12th Cruel Jewel 100 Mile 39:12:20 h96
23.03 40mi USA13th The Mt. Tammany 10 12:12:56 h23
2023
14.10 50km USA4th MuleSkinner Endurance 50 km Race 4:58:52 h3 🥉
09.09 50km USA8th Boulder Field 100 - 50 km Ultra Run 6:31:07 h56
19.05 106mi USA11th Cruel Jewel 100 Mile 36:40:51 h54
25.03 40mi USA12th The Mt. Tammany 10 12:06:17 h27
2022
10.09 50km USA7th Boulder Field 100 - 50 km Ultra Run 6:34:36 h59
13.05 106mi USA10th Cruel Jewel 100 Mile 45:29:09 h116
26.03 40mi USA11th The Mt. Tammany 10 12:13:30 h27
2021
27.03 50km USA8th Behind the Rocks 50km Race 6:44:09 h87
2020
25.01 50km USA3rd Arches Ultra 50 km Race 4:43:05 h39
2019
13.09 100mi USA13th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run 28:46:55 h40
27.07 50mi USA10th Grand Mesa 50 Mile Trail Race 10:31:38 h17
23.03 50km USA6th Behind the Rocks 50km Race 6:00:07 h75
2018
14.09 100mi USA12th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run 31:30:29 h62
28.07 50mi USA5th Ouray 50 Mile Endurance Run 22:49:00 h16
24.03 50km USA5th Behind the Rocks 50km Race 6:51:38 h83
2017
07.09 100mi USA11th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run 33:01:30 h91
15.04 50km USA14th Desert Rats Trail Running Festival 50 km 6:25:05 h31
2016
19.11 50mi USA2nd Dead Horse 50 Mile Race 10:05:24 h43
09.07 50km USA9th Speedgoat 50k 9:13:01 h106
16.04 52mi USA13th Desert Rats Trail Running Festival 50 Miles 10:14:23 h4
13.02 55km USA10th Moab Red Hot 55k 6:56:11 h191
2015
01.08 100mi USA28th Angeles Crest 100 Mile 29:28:06 h50
10.04 100mi USA4th The Zion 100 Mile Run 26:12:40 h47
07.02 50mi USA2nd Sean O'Brien 50 Mile Trail Race 10:03:56 h21
2014
18.10 50mi USA6th Twin Peaks 50M 11:51:56 h6
02.08 100mi USA27th Angeles Crest 100 Mile 26:14:19 h25
17.05 50km USA4th Born to Run Ultra 50 km Marathon 4:36:37 h19
26.04 50mi USA22nd Leona Divide 50 Mile Run 9:01:35 h26
22.03 50mi USA8th Old Goat's 50 Mile Trail Race 9:47:46 h12
01.02 50mi USA1st Sean O'Brien 50 Mile Trail Race 10:19:47 h77
2013
07.12 50km USA7th Endurance Challenge - California Trail 50 km 5:50:07 h67
23.11 50mi USA5th Santa Barbara Red Rock 50 Mile 10:45:45 h12
21.09 50km USA7th Noble Canyon 50k 5:41:58 h51
03.08 100mi USA26th Angeles Crest 100 Mile 28:45:29 h37
27.04 50mi USA21st Leona Divide 50 Mile Run 10:14:07 h76
02.02 50mi USA2nd Ray Miller 50 Mile Trail Race 11:15:22 h54
2012
25.11 50mi USA4th Santa Barbara Red Rock 50 Mile 12:17:11 h19
22.09 50km USA6th Noble Canyon 50k 6:02:06 h46