Mark Dangerfield
ID 16920
Born : 1950 Cat. M75 Ultrarunner since 2005 USA
27
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
1
Countries visited ?USAUnited States
49,3%
Rank quotient ?This runner's calculation uses 27 eligible race(s): Σ(rank − 1) = 1 532; Σ finishers = 3 107. 1 532 / 3 107 × 100 = 49.31%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed27
Km — ultra races2 464 km
> 100 km7
> 160 km2
> 200 km1
> 24h8
> 48h4
Longest race236,5 km
33rd Across the Years, 48h — 30/12/2017

Km per year (ultra races)

2022
192
2 races
2023
132
2 races
2024
2025
2026

Race types (share of distance)

Road52,5%
Trail42,7%
Elim.4,8%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 32
🏅 Top 3 M2
Longest winning streak0
Current streak0

Records

50 km4h20'48100 km13h23'0350 mi8h00'236 h47,00 km24 h157,12 km48 h236,53 km

HISTORY

27 race(s)
DateRacePerf.Rk
2024
03.05 50mi USA14th Salt Flats 50 Mile 11:49:15 h24
23.03 51.3km USA32nd Crown King Scramble 50K 9:57:43 h255
2023
17.11 48h USA5th Fat Ox 48 Hour Run 144.689 km16
26.08 6h USA7th Jackrabbit Jubilee 6 Hour Run 46.999 km7
2021
28.12 48h USA37th Across the Years, 48h 114.660 km47
2020
04.01 32:15h USA35th Across The Years, Last Person Standing 118.035 km9
2018
31.12 24h USA34th Across the Years, 24h 81.094 km91
27.10 100km USA16th Javelina Jundred 100 km Endurance Run 13:59:24 h40
2017
30.12 48h USA33rd Across the Years, 48h 236.530 km7
25.03 50mi USA4th Monument Valley 50 Mile Race 13:26:56 h158
2016
31.12 48h USA32nd Across the Years, 48h 162.190 km23
06.08 100km USA10th Green Lakes Endurance Run 100 km 13:23:03 h5
2015
29.12 24h USA31st Across the Years, 24h 157.120 km26
21.11 50mi USA53rd JFK 50 Mile 10:55:02 h532
22.08 50mi USA11th Lean Horse Ultra-Marathon 50 Mile 8:42:20 h9
2014
23.08 50km USA10th Lean Horse Ultra-Marathon 50 km 4:40:06 h3 🥉
18.01 50km USA8th Hilo to Volcano 50k Ultramarathon 5:12:54 h5
2013
27.07 50km USA7th Great Cranberry Island 50K Ultra 4:20:48 h13
2010
17.07 100km USA3rd Vermont 100 km Endurance Race 16:23:39 h9
01.05 40mi USA32nd Strolling Jim 40 Mile 5:59:27 h11
13.02 50km USA12th Pemberton Trail 50 km 4:45:23 h35
2007
28.07 31mi USA5th Jay Mountain Marathon 8:37:22 h156
2006
31.12 24h USA24th Across the Years, 24h 83.500 km35
11.11 50km USA12th Just Another Mad Dog 50 km 4:25:50 h3 🥉
2005
31.12 24h USA23rd Across the Years, 24h 137.000 km20
29.10 50mi USA6th Chicago Lakefront Fall 50 Mile Race 8:00:23 h8
07.05 40mi USA27th Strolling Jim 40 Mile 6:22:54 h12