Jason Davis
ID 341473
Born : 1974 Cat. M50 Ultrarunner since 2011 USA
32
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
54
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
51,9%
Rank quotient ?This runner's calculation uses 32 eligible race(s): Σ(rank − 1) = 1 498; Σ finishers = 2 888. 1 498 / 2 888 × 100 = 51.87%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed32
Km — ultra races4 099 km
> 100 km15
> 160 km15
> 200 km4
> 24h4
Longest race563,3 km
Iditarod Trail Invitational 350 Miles — 24/2/2019

Km per year (ultra races)

322
2 races
2022
161
1 race
2023
80
1 race
2024
217
1 race
2025
2026

Race types (share of distance)

Road2,0%
Trail98,0%

Records

50 km4h51'2750 mi9h46'19100 mi24h21'1112 h74,83 km24 h84,81 km

HISTORY

32 race(s)
DateRacePerf.Rk
2025
27.01 135mi USA20th Arrowhead Winter Ultra 2d 05:09:00 h23
2024
20.04 50mi USA1st Thumb Coast Ultra 50 Mile 9:53:22 h79
2023
29.09 100mi USA25th The Bear 100 Mile Endurance Run 34:56:00 h207
2022
20.08 100mi USA17th Lean Horse Ultra-Marathon 100 Mile 26:33:42 h28
06.05 100mi USA12th Salt Flats 100 Mile 28:53:19 h25
2021
09.10 24h USA4th Bear Lake Ultra Race 64.856 km50
14.08 100mi USA16th Lean Horse Ultra-Marathon 100 Mile 25:01:35 h17
24.07 12h USA6th Loopty Loop 12 Hour Ultra Trail Marathon 74.834 km18
29.05 12h USA6th Three Sisters Ultra Festival 12 Hour Run 55.321 km18
2020
17.10 24h USA3rd Bear Lake Ultra Race 64.856 km42
2019
28.09 24h USA2nd Bear Lake Ultra Race 84.812 km35
07.09 50km USA11th Run Woodstock - Freak 50 km 6:13:43 h44
04.05 24h USA1st Twilight Zone 24 Hour Endurance Run 66.385 km59
24.02 350mi USAIditarod Trail Invitational 350 Miles 7d 13:19:00 h8
2018
06.10 50km USA3rd Thru The Leaves 50k Trail Run 7:24:13 h9
08.09 50km USA10th Run Woodstock - Freak 50 km 5:17:27 h19
2017
08.09 100mi USA27th Superior Fall Trail Races 100 Mile 37:33:49 h163
2016
25.01 135mi USA11th Arrowhead Winter Ultra 2d 03:14:00 h10
2015
12.09 100mi USA6th Hawk Hundred - 100 Mile Trail Run 25:20:41 h4
26.01 135mi USA10th Arrowhead Winter Ultra 2d 05:23:00 h27
2014
26.07 50mi USA33rd Minnesota Voyageur Trail 50 Mile Ultra 12:24:36 h141
2013
02.11 100mi USA5th Ozark Trail 100 Mile Endurance Run 29:29:25 h22
27.07 50mi USA32nd Minnesota Voyageur Trail 50 Mile Ultra 11:05:11 h73
29.06 100mi trail race USA3rd Black Hills 100 Mile Run 29:54:16 h43
01.06 100mi USA18th Kettle Moraine 100 Mile Endurance Run 25:11:56 h30
12.04 100mi USA5th Zumbro 100 Mile 28:58:51 h7
2012
27.10 50mi USA5th Surf the Murph 50 Mile Run 9:46:19 h16
13.10 50km USA1st Market to Market 50 4:51:27 h23
25.08 100mi USA8th Lean Horse Ultra-Marathon 100 Mile 24:21:11 h38
05.05 50km USA8th Greenland Trail Race 6:03:35 h90
2011
29.10 50mi USA4th Surf the Murph 50 Mile Run 11:51:00 h36
07.05 50km USA7th Greenland Trail Race 6:47:31 h126