David Samuelson
ID 269039
Born : 1950 Cat. M75 Ultrarunner since 1981 USA
24
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
37,2%
Rank quotient ?This runner's calculation uses 24 eligible race(s): Σ(rank − 1) = 1 483; Σ finishers = 3 984. 1 483 / 3 984 × 100 = 37.22%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed24
Km — ultra races2 036 km
> 100 km5
> 160 km3
Longest race160,9 km
10th Old Dominion 100 Mile Endurance Run — 11/6/1988

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road7,9%
Trail92,1%

Records

50 km4h24'3950 mi6h45'15100 mi21h44'00

HISTORY

24 race(s)
DateRacePerf.Rk
1998
17.05 50km USA11th Ohlone 50K Wilderness Run 7:34:46 h60
1997
15.03 50km USA8th Way Too Cool 50K Endurance Run 6:22:08 h285
1996
24.05 50km USA9th Ohlone 50K Wilderness Run 6:39:02 h49
1994
15.05 50km USA7th Ohlone 50K Wilderness Run 7:07:31 h30
1989
21.05 50km USA3rd Ohlone 50K Wilderness Run 6:35:02 h41
1988
11.06 100mi USA10th Old Dominion 100 Mile Endurance Run 21:44:00 h15
15.05 50km USA2nd Ohlone 50K Wilderness Run 5:52:13 h18
1987
20.09 28.7mi USALassen Park Ultra 4:13:52 h13
1986
28.06 100mi USA13th Western States 100 Mile Endurance Run 24:12:13 h97
1985
06.07 100mi USA12th Western States 100 Mile Endurance Run 23:20:32 h70
06.04 52.4mi USAThe Forty-Niner Double Marathon Trail Run 9:21:45 h49
1984
05.08 50km USA3rd Skyline 50k Endurance Run 6:31:35 h213
02.06 50mi USANugget 50 Mile Trail Run 9:46:18 h23
15.04 50mi USA5th American River 50 Mile Endurance Run 9:25:04 h198
1983
11.09 50mi USADrake's Bay 50 Mile Run 9:41:00 h6
25.06 93.5mi USA10th Western States 100 Mile Endurance Run 22:21:00 h46
17.04 50mi USA4th American River 50 Mile Endurance Run 7:23:58 h46
1982
02.10 48.6mi USACow Mountain Planet Earth Run 6:58:30 h8
01.08 50km USA1st Skyline 50k Endurance Run 4:24:39 h48
26.06 93.5mi USA9th Western States 100 Mile Endurance Run 22:08:00 h34
18.04 50mi USA3rd American River 50 Mile Endurance Run 7:45:50 h35
14.02 50mi USA5th Jed Smith Ultra Classic - 50 Mile Race 6:45:15 h15
1981
12.04 50mi USA2nd American River 50 Mile Endurance Run 7:58:38 h64
15.02 50mi USA4th Jed Smith Ultra Classic - 50 Mile Race 7:31:53 h44