Jim Dempsey
ID 29148
Born : 1953 Cat. M70 Ultrarunner since 1979 USA
25
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
42
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
26,8%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 479; Σ finishers = 1 788. 479 / 1 788 × 100 = 26.79%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races2 497 km
> 100 km7
> 160 km4
> 200 km1
> 24h8
> 48h2
Longest race211,5 km
22nd Across the Years, 48h — 30/12/2004

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road79,2%
Trail12,9%
?7,9%

Wins & podiums (ultra)

🏆 Win3
🏆 Win M3
🏅 Top 36
🏅 Top 3 M6
Longest winning streak1
Current streak0

Records

50 mi6h33'30100 mi41h57'0012 h125,51 km24 h180,25 km48 h211,50 km

HISTORY

25 race(s) · 6 split(s) nested
DateRacePerf.Rk
2015
14.08 12h USA1st Anchor Down Ultra 12 Hour Run 65.983 km11
24.07 24h USA19th Ultra Around The Lake 24h 57.514 km61
2005
30.07 24h USA9th Around The Lake Ultra 24h 142.394 km8
2004
30.12 48h USA22nd Across the Years, 48h 211.500 km6
09.10 50mi USA2nd Can Lake 50 Mile Ultra 9:59:16 h24
13.08 24h USA8th Around The Lake Ultra 24h 82.881 km33
1998
04.04 50mi USA19th American River 50 Mile Endurance Run 8:16:18 h83
1997
05.04 50mi USA18th American River 50 Mile Endurance Run 8:26:40 h115
1984
01.09 24h USA4th The Last Annual Rowdy Ultimate 24 Hour Track Race 66.787 km19
13.07 100mi USAHogback Hundred 41:57:00 h12
26.05 40mi USA5th Forest Park 40 Mile 4:47:57 h3 🥉
06.05 70mi USA4th Sri Chinmoy 70 Mile Run 9:59:13 h1 🏆
29.04 50mi USA11th Lake Waramaug 50mi Ultra Marathon 6:33:30 h8
15.01 56.7mi USA6th Leslie Pawson Cross Rhode Island Run 7:56:29 h1 🏆
1983
03.12 50mi USAValley Stream 50 Miler 6:49:04 h9
05.06 40mi USA4th Forest Park 40 Mile 4:54:00 h4
14.01 48h USAHaverford Indoor 48 Hour 196.432 km18
1982
28.08 12h USA2nd Crocheron 12 Hour Run 125.505 km6
21.08 24h USAIndependent Man 24 Hour 90.328 km9
07.08 50mi USADC Road Runners 50 Mile 6:41:26 h2 🥈
31.07 60km USABroadway Ultra Society Handicap Ultra 5:32:46 h1 🏆
10.07 50mi USAHannibal 50 Miler 7:54:38 h4
19.06 24h USA2nd The Last Annual Rowdy Ultimate 24 Hour Track Race 180.246 km3 🥉
02.05 50mi USA9th Lake Waramaug 50mi Ultra Marathon 6:53:22 h32
1979
06.05 50mi USA6th Lake Waramaug 50mi Ultra Marathon 7:17:25 h31