Ruth Liebowitz
ID 35874
Born : 1942 Cat. W80 Ultrarunner since 2005 USA
41
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
45
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
86,0%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 3 132; Σ finishers = 3 641. 3 132 / 3 641 × 100 = 86.02%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed43
Km — ultra races2 453 km
> 100 km2
> 160 km1
> 24h2
Longest race160,9 km
15th New York Pioneer Memorial 100 Mile Trek — 23/5/2009

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road89,5%
Trail4,0%
Stage6,6%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F0
🏅 Top 30
🏅 Top 3 F3
Longest winning streak0
Current streak0

Records

50 km5h26'2450 mi9h32'40100 mi21h52'396 h54,83 km12 h80,16 km24 h110,80 km

HISTORY

41 race(s)
DateRacePerf.Rk
2018
17.11 60km USA38th NYRR Knickerbocker 60K 10:26:58 h360
2015
14.11 60km USA35th NYRR Knickerbocker 60K 12:40:01 h350
2014
15.11 60km USA34th NYRR Knickerbocker 60K 9:25:20 h296
2013
16.11 60km USA33rd NYRR Knickerbocker 60K 9:20:07 h312
05.10 24h USA4th Ted Corbitt 24-Hour Run 93.046 km32
03.03 50km USA11th Caumsett Park 50K Lloyd Neck - Open Race 7:23:54 h72
2012
22.12 50km USA1st BUS Trail Mix-Up Run 50K 7:14:05 h40
17.11 60km USA32nd NYRR Knickerbocker 60K 7:47:13 h267
22.09 6h USA10th Staten Island 6 hour Ultra race 45.319 km36
04.03 50km USA10th Caumsett Park 50K Lloyd Neck 6:50:32 h107
2011
16.04 50km USA33rd Sybil Ludington 50 km Run 6:58:57 h36
06.03 50km USA9th Caumsett Park 50K Lloyd Neck 6:02:42 h82
2010
26.09 6h USA1st BUS Half Ass Trail Mix-up 6h 47.475 km18
19.06 12h USAJoe Kleinerman 12-Hour Run Crocheron Park 68.750 km49
24.04 50km USA32nd Sybil Ludington 50 km Run 6:48:58 h38
28.03 50km USA16th Queens 50 km Run 6:25:33 h28
07.03 50km USA8th Caumsett Park 50K Lloyd Neck 5:48:54 h86
2009
19.09 6h USA9th Staten Island 6 hour Ultra race 50.469 km26
23.05 100mi/3stages USA15th New York Pioneer Memorial 100 Mile Trek 21:52:39 h17
25.04 50km USA31st Sybil Ludington 50 km Run 7:04:55 h41
01.03 50km USA7th Caumsett Park 50K Lloyd Neck 5:59:44 h74
2008
15.11 60km USA28th NYRR Knickerbocker 60K 7:45:42 h68
19.10 6h USA9th 6 Hour 60th Birthday Run 45.045 km46
04.10 24h USA3rd Ted Corbitt 24-Hour Run 110.803 km42
20.09 6h USA8th Staten Island 6 hour Ultra race 53.623 km21
02.08 12h USAJoe Kleinerman 12-Hour Run Crocheron Park 80.155 km29
14.06 50km USA2nd Unisphere 50 km Ultra Marathon 7:03:11 h31
26.04 50km USA30th Sybil Ludington 50 km Run 6:13:17 h31
02.03 50km USA6th Caumsett Park 50K Lloyd Neck 6:06:01 h76
2007
14.10 6h USA8th 6 Hour 60th Birthday Run 45.238 km37
21.04 50km USA29th Sybil Ludington 50 km Run 6:04:08 h31
01.04 50mi USA35th Metropolitan 50 Mile Race 9:32:40 h21
04.03 50km USA5th Caumsett Park 50K Lloyd Neck 5:30:39 h62
2006
25.11 60km USA26th NYRR Knickerbocker 60K 7:22:17 h90
15.10 6h USA7th 6 Hour 60th Birthday Run 48.328 km26
20.08 8h USAJohnny's 8-Hour Run Crocheron Park 61.122 km25
02.04 50mi USA34th Metropolitan 50 Mile Race 9:57:26 h12
05.03 50km USA4th Caumsett Park 50K Lloyd Neck 5:26:24 h53
2005
26.11 60km USA25th NYRR Knickerbocker 60K 6:57:33 h55
16.10 6h USA6th 6 Hour 60th Birthday Run 47.121 km26
24.09 6h USA5th Staten Island 6 hour Ultra race 54.827 km24