Mary Walker
ID 653761
Born : 1984 Cat. W40 Ultrarunner since 2013 USA
34
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
53,5%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 1 797; Σ finishers = 3 356. 1 797 / 3 356 × 100 = 53.55%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed34
Km — ultra races4 190 km
> 100 km15
> 160 km15
> 200 km2
> 24h3
Longest race383,0 km
2nd Moab 240 Endurance Run — 12/10/2018

Km per year (ultra races)

372
3 races
2022
379
4 races
2023
228
3 races
2024
100
1 race
2025
2026

Race types (share of distance)

Road12,1%
Trail81,6%
Stage3,1%
Elim.3,2%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F2
🏅 Top 30
🏅 Top 3 F7
Longest winning streak0
Current streak0

Records

50 km6h04'54100 km16h08'4450 mi10h10'13100 mi22h13'3512 h80,87 km24 h83,69 kmBackyard13 loops

HISTORY

34 race(s)
DateRacePerf.Rk
2025
06.12 100km USA12th Jackson County 50-50 Ultra-marathon - 100km 16:10:09 h32
2024
07.12 100km USA11th Jackson County 50-50 Ultra-marathon - 100km 16:08:44 h38
15.06 12h USA1st Vulture Vista Ultra 80.869 km10
27.04 Backyard Ultra USA3rd Grind on the Grid Backyard Ultra 46.942 km (7h)40
2023
14.10 50mi USA11th Indiana Trail 50 Mile 10:42:16 h16
27.05 12h USA18th Hawthorn Half Day 12 Hour Run 50.050 km25
15.04 Backyard Ultra USA2nd Grind on the Grid Backyard Ultra 87.178 km (13h)12
14.01 100mi USA13th Long Haul 100 Mile Ultra-Marathons 22:13:35 h22
2022
08.10 100mi USA10th Indiana Trail 100 Mile 22:22:38 h21
17.06 100mi USA30th Bighorn Mountain Wild & Scenic 100 Mile Trail Run 34:47:36 h128
26.03 50km USA25th OPSF Ultra 50 km Race 8:02:06 h28
2021
13.11 100mi USA8th Tunnel Hill 100 Mile Race 22:46:34 h75
14.05 106mi USA9th Cruel Jewel 100 Mile 38:50:07 h76
2019
09.11 50mi USA6th Tunnel Hill 50 Mile Race 10:10:13 h118
12.10 100mi USA7th Indiana Trail 100 Mile 25:58:40 h61
16.08 100mi USA9th Kodiak 100 Mile Ultramarathon 35:32:20 h74
15.06 100mi USA30th Mohican Trail 100 Mile 28:31:04 h39
13.04 24h USA1st Trap Trail 24 Hour Run 83.685 km5
23.03 50km USA22nd OPSF Ultra 50 km Race 7:07:39 h27
2018
12.10 238mi USA2nd Moab 240 Endurance Run 4d 10:15:36 h84
28.07 102mi USA12th Burning River 100 Mile Endurance Run 26:57:49 h83
18.05 106mi USA6th Cruel Jewel 100 Mile 41:52:02 h64
2017
08.09 202mi USA4th Tahoe 200 Mile Endurance Run 4d 01:19:39 h102
29.07 50mi USA3rd Pikes Peak Ultra 50 Mile 14:15:33 h54
29.04 100mi USA5th Indiana Trail 100 Mile 26:35:36 h47
2016
12.11 50mi USA3rd Tunnel Hill 50 Mile Race 11:11:38 h162
20.02 50mi USA3rd Antelope Canyon 50 Mile Race 14:24:37 h188
2015
07.11 50mi USA19th OPSF Ultra 50 Mile Race 12:36:14 h9
03.10 100mi USA2nd Cloudsplitter 100 - 100 Mile Run 33:59:23 h16
13.06 12h USA10th Hawthorn Half Day 12 Hour Run 54.878 km46
25.04 100mi USA3rd Indiana Trail 100 Mile 28:49:25 h83
2014
04.10 50km USA1st Cloudsplitter 100 - 50 km Run 11:09:37 h34
2013
13.07 50km USA1st Blue Blazes Ultra Stage Race 50 km Run 6:04:54 h7
12.07 50mi USA1st Blue Blazes Ultra Stage Race 50 Mile Run 13:47:08 h5