Robert Leder

Born : 1970 Cat. M55 Ultrarunner since 2005

DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.

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

Countries visited ?

United States

50,9%

Rank quotient ?This runner's calculation uses 72 eligible race(s): Σ(rank − 1) = 2 314; Σ finishers = 4 545. 2 314 / 4 545 × 100 = 50.91%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed72

Km — ultra races5 004 km

> 100 km8

> 160 km2

> 24h7

Longest race160,9 km

7th C&O Canal 100 Mile — 27/4/2019

Km per year (ultra races)

186

2022

2023

2024

2025

2026

Race types (share of distance)

Road63,0%

Trail37,0%

Wins & podiums (ultra)

🏆 Win0

🏆 Win M0

🏅 Top 32

🏅 Top 3 M4

Longest winning streak0

Current streak0

Records

50 km4h37'50 100 km16h48'59 50 mi8h53'05 100 mi26h15'47 6 h54,06 km 12 h97,87 km 24 h148,96 km

HISTORY

72 race(s)

Date		Race	Perf.	Rk
2025
07.06	12h	5th Sri Chinmoy 12 Hour Race Rockland Lake	61.686 km	45
2024
08.06	12h	4th Sri Chinmoy 12 Hour Race Rockland Lake	52.174 km	58
2023
10.06	12h	3rd Sri Chinmoy 12 Hour Race Rockland Lake	66.401 km	33
2022
17.09	9h	7th Forgotten Forest 9 Hour Ultra Marathon	51.906 km	14
09.07	12h	8th Notchview Ultra 12 Hour Ultra	67.270 km	8
11.06	12h	2nd Sri Chinmoy 12 Hour Race Rockland Lake	66.406 km	19
2021
04.12	50mi	7th Daytona 100 - 50 Miles Ultra	12:21:00 h	22
17.10	6h	22th Fred von der Heydt Memorial 6 Hour 60th Birthday Run	45.576 km	27
26.09	8h	2nd 8 Hours at the Brewery 8 Hour Race	49.567 km	7
07.08	12h	3rd Loopy Looper 12-Hour Run	72.420 km	32
12.06	12h	1st Sri Chinmoy 12 Hour Race Rockland Lake	87.246 km	5
24.04	7h	1st The Lucky Seven 7 Hour Run	50.147 km	16
2020
05.12	50mi	6th Daytona 100 - 50 Miles Ultra	10:27:00 h	14
31.10	50mi	31th Mohican Trail 50 Mile	11:24:15 h	31
19.09	9h	5th Forgotten Forest 9 Hour Ultra Marathon	71.458 km	6
22.08	6h	4th Enchanted Forest 6 Hour Ultra Run	52.271 km	2 🥈
18.01	52km	10th Coldwater Rumble 52K Race	7:36:50 h	52
2019
07.12	50mi	5th Daytona 100 - 50 Miles Ultra	10:41:00 h	6
09.11	12h	7th NJ One Day 12 Hour Race	83.685 km	9
20.10	6h	20th Fred von der Heydt Memorial 6 Hour 60th Birthday Run	46.477 km	17
28.09	50km	10th The Bear Chase 50 km	6:45:38 h	78
07.09	50km	5th Ted Corbitt 50 km	7:15:51 h	28
07.09	100km	5th Ted Corbitt 100 km	16:48:59 h	30
13.07	24h	2nd Ethan Allen 24 Hour Run	148.960 km	10
04.07	6h	5th Notchview Ultra 6 Hour Ultra	48.924 km	3 🥉
29.06	30h	2nd Forbidden Forest 30-Hour Ultra Run	132.786 km	20
01.06	50mi	3rd Lighthouse 50-Mile Ultra	10:10:00 h	11
18.05	6h	11th 3 Days at the Fair 6 Hour Race	51.499 km	4
27.04	100mi	7th C&O Canal 100 Mile	26:15:47 h	49
13.04	50km	41st Sybil Ludington 50 km Run	5:40:42 h	18
2018
08.12	50mi	4th Daytona 100 - 50 Miles Ultra	10:06:00 h	7
10.11	24h	6th NJ One Day 24 Hour Race	101.388 km	28
14.10	6h	19th Fred von der Heydt Memorial 6 Hour 60th Birthday Run	45.061 km	30
06.10	100mi	4th The Hennepin Hundred - 100 Mile Run	28:35:36 h	75
22.09	9h	3rd Forgotten Forest 9 Hour Ultra Marathon	64.373 km	9
14.07	24h	1st Ethan Allen 24 Hour Run	138.844 km	8
07.07	6h	4th Notchview Ultra 6 Hour Ultra	45.866 km	5
30.06	30h	1st Forbidden Forest 30-Hour Ultra Run	117.900 km	14
21.04	6h	2nd Enchanted Forest 6 Hour Ultra Run	45.061 km	14
2017
03.12	50km	5th BUS Trail Mix-Up Run 50K	6:02:16 h	33
15.10	6h	18th 6 Hour 60th Birthday Run	48.537 km	25
16.09	9h	2nd Forgotten Forest 9 Hour Ultra Marathon	55.699 km	22
2010
26.09	6h	1st BUS Half Ass Trail Mix-up 6h	52.683 km	12
28.03	50km	16th Queens 50 km Run	5:37:55 h	17
07.03	50km	8th Caumsett Park 50K Lloyd Neck	5:28:05 h	68
2009
21.11	60km	29th NYRR Knickerbocker 60K	5:45:49 h	62
23.05	50km	15th Queens 50 km Run	5:48:37 h	13
25.04	50km	31st Sybil Ludington 50 km Run	5:21:16 h	16
2008
19.10	6h	9th 6 Hour 60th Birthday Run	52.577 km	18
04.10	24h	3rd Ted Corbitt 24-Hour Run	145.500 km	18
20.09	6h	8th Staten Island 6 hour Ultra race	49.728 km	36
02.08	12h	Joe Kleinerman 12-Hour Run Crocheron Park	97.868 km	13
14.06	50km	2nd Unisphere 50 km Ultra Marathon	6:24:18 h	21
10.05	50km	6th Long Island Greenbelt Trail 50 km	6:45:12 h	31
26.04	50km	30th Sybil Ludington 50 km Run	5:43:28 h	28
20.04	50km	34th Lake Waramaug 50km Ultra Marathon	5:49:17 h	30
2007
17.11	60km	27th NYRR Knickerbocker 60K	6:55:21 h	91
14.10	6h	8th 6 Hour 60th Birthday Run	54.057 km	15
28.07	24h	11th Around The Lake Ultra 24h	91.539 km	32
01.04	50mi	35th Metropolitan 50 Mile Race	8:53:05 h	15
04.03	50km	5th Caumsett Park 50K Lloyd Neck	4:37:50 h	32
2006
25.11	60km	26th NYRR Knickerbocker 60K	5:52:03 h	27
06.11	50mi	6th Stone Cat 50 Mile	12:19:24 h	56
15.10	6h	7th 6 Hour 60th Birthday Run	51.627 km	19
30.09	50mi	13th Vermont 50 Miles Ultra Run	11:57:55 h	111
20.08	8h	Johnny's 8-Hour Run Crocheron Park	69.526 km	12
16.06	50km	27th Laurel Highlands 50 km Ultra	6:56:58 h	20
22.04	50km	28th Sybil Ludington 50 km Run	4:43:53 h	13
2005
26.11	60km	25th NYRR Knickerbocker 60K	6:11:27 h	35
19.11	50mi	43rd JFK 50 Mile	10:47:45 h	527
16.10	6h	6th 6 Hour 60th Birthday Run	50.758 km	17
24.09	50km	12th Vermont 50 km Ultra Run	5:50:34 h	37

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	27/4/2019	7th C&O Canal 100 Mile	160,93	×3
✓ 2	6/10/2018	4th The Hennepin Hundred - 100 Mile Run	160,93	×3
✓ 3	13/7/2019	2nd Ethan Allen 24 Hour Run	148,96	×2
✓ 4	4/10/2008	3rd Ted Corbitt 24-Hour Run	145,50	×2
✓ 5	14/7/2018	1st Ethan Allen 24 Hour Run	138,84	×2
✓ 6	29/6/2019	2nd Forbidden Forest 30-Hour Ultra Run	132,79	×2
✓ 7	30/6/2018	1st Forbidden Forest 30-Hour Ultra Run	117,90	×2
✓ 8	10/11/2018	6th NJ One Day 24 Hour Race	101,39	×1
✓ 9	7/9/2019	5th Ted Corbitt 100 km	100,00	×1
✓ 10	2/8/2008	Joe Kleinerman 12-Hour Run Crocheron Park	97,87	×1
✓ 11	28/7/2007	11th Around The Lake Ultra 24h	91,54	×1
✓ 12	12/6/2021	1st Sri Chinmoy 12 Hour Race Rockland Lake	87,25	×1
✓ 13	9/11/2019	7th NJ One Day 12 Hour Race	83,69	×1
✓ 14	4/12/2021	7th Daytona 100 - 50 Miles Ultra	80,47	×1
✓ 15	5/12/2020	6th Daytona 100 - 50 Miles Ultra	80,47	×1
✓ 16	31/10/2020	31th Mohican Trail 50 Mile	80,47	×1
✓ 17	7/12/2019	5th Daytona 100 - 50 Miles Ultra	80,47	×1
✓ 18	1/6/2019	3rd Lighthouse 50-Mile Ultra	80,47	×1
✓ 19	8/12/2018	4th Daytona 100 - 50 Miles Ultra	80,47	×1
✓ 20	1/4/2007	35th Metropolitan 50 Mile Race	80,47	×1
✓ 21	6/11/2006	6th Stone Cat 50 Mile	80,47	×1
✓ 22	30/9/2006	13th Vermont 50 Miles Ultra Run	80,47	×1
✓ 23	19/11/2005	43rd JFK 50 Mile	80,47	×1
✓ 24	7/8/2021	3rd Loopy Looper 12-Hour Run	72,42	×1
✓ 25	19/9/2020	5th Forgotten Forest 9 Hour Ultra Marathon	71,46	×1
✓ 26	20/8/2006	Johnny's 8-Hour Run Crocheron Park	69,53	×1
✓ 27	9/7/2022	8th Notchview Ultra 12 Hour Ultra	67,27	×1
✓ 28	11/6/2022	2nd Sri Chinmoy 12 Hour Race Rockland Lake	66,41	×1
✓ 29	10/6/2023	3rd Sri Chinmoy 12 Hour Race Rockland Lake	66,40	×1
✓ 30	22/9/2018	3rd Forgotten Forest 9 Hour Ultra Marathon	64,37	×1
✓ 31	7/6/2025	5th Sri Chinmoy 12 Hour Race Rockland Lake	61,69	×1
✓ 32	21/11/2009	29th NYRR Knickerbocker 60K	60,00	×1
✓ 33	17/11/2007	27th NYRR Knickerbocker 60K	60,00	×1
✓ 34	25/11/2006	26th NYRR Knickerbocker 60K	60,00	×1
✓ 35	26/11/2005	25th NYRR Knickerbocker 60K	60,00	×1
✓ 36	16/9/2017	2nd Forgotten Forest 9 Hour Ultra Marathon	55,70	×1
✓ 37	14/10/2007	8th 6 Hour 60th Birthday Run	54,06	×1
✓ 38	26/9/2010	1st BUS Half Ass Trail Mix-up 6h	52,68	×1
✓ 39	19/10/2008	9th 6 Hour 60th Birthday Run	52,58	×1
✓ 40	22/8/2020	4th Enchanted Forest 6 Hour Ultra Run	52,27	×1
✓ 41	8/6/2024	4th Sri Chinmoy 12 Hour Race Rockland Lake	52,17	×1
✓ 42	18/1/2020	10th Coldwater Rumble 52K Race	52,00	×1
✓ 43	17/9/2022	7th Forgotten Forest 9 Hour Ultra Marathon	51,91	×1
✓ 44	15/10/2006	7th 6 Hour 60th Birthday Run	51,63	×1
✓ 45	18/5/2019	11th 3 Days at the Fair 6 Hour Race	51,50	×1
✓ 46	16/10/2005	6th 6 Hour 60th Birthday Run	50,76	—
✓ 47	24/4/2021	1st The Lucky Seven 7 Hour Run	50,15	—
✓ 48	28/9/2019	10th The Bear Chase 50 km	50,00	—
✓ 49	13/4/2019	41st Sybil Ludington 50 km Run	50,00	—
✓ 50	3/12/2017	5th BUS Trail Mix-Up Run 50K	50,00	—
51	28/3/2010	16th Queens 50 km Run	50,00	—
52	7/3/2010	8th Caumsett Park 50K Lloyd Neck	50,00	—
53	23/5/2009	15th Queens 50 km Run	50,00	—
54	25/4/2009	31st Sybil Ludington 50 km Run	50,00	—
55	14/6/2008	2nd Unisphere 50 km Ultra Marathon	50,00	—
56	10/5/2008	6th Long Island Greenbelt Trail 50 km	50,00	—
57	26/4/2008	30th Sybil Ludington 50 km Run	50,00	—
58	20/4/2008	34th Lake Waramaug 50km Ultra Marathon	50,00	—
59	4/3/2007	5th Caumsett Park 50K Lloyd Neck	50,00	—
60	16/6/2006	27th Laurel Highlands 50 km Ultra	50,00	—
61	22/4/2006	28th Sybil Ludington 50 km Run	50,00	—
62	24/9/2005	12th Vermont 50 km Ultra Run	50,00	—
63	20/9/2008	8th Staten Island 6 hour Ultra race	49,73	—
64	26/9/2021	2nd 8 Hours at the Brewery 8 Hour Race	49,57	—
65	4/7/2019	5th Notchview Ultra 6 Hour Ultra	48,92	—
66	15/10/2017	18th 6 Hour 60th Birthday Run	48,54	—
67	20/10/2019	20th Fred von der Heydt Memorial 6 Hour 60th Birthday Run	46,48	—
68	7/7/2018	4th Notchview Ultra 6 Hour Ultra	45,87	—
69	17/10/2021	22th Fred von der Heydt Memorial 6 Hour 60th Birthday Run	45,58	—
70	14/10/2018	19th Fred von der Heydt Memorial 6 Hour 60th Birthday Run	45,06	—
71	21/4/2018	2nd Enchanted Forest 6 Hour Ultra Run	45,06	—