Greg Nacco

Born : 1960 Cat. M65 Ultrarunner since 1992

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

13,0%

Rank quotient ?This runner's calculation uses 129 eligible race(s): Σ(rank − 1) = 4 279; Σ finishers = 33 028. 4 279 / 33 028 × 100 = 12.96%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed129

Km — ultra races8 678 km

> 100 km10

> 160 km10

Longest race160,9 km

42nd Western States 100 Mile Endurance Run — 27/6/2015

Km per year (ultra races)

150

2022

101

2023

2024

2025

2026

Race types (share of distance)

Road6,1%

Trail93,9%

Wins & podiums (ultra)

🏆 Win1

🏆 Win M1

🏅 Top 311

🏅 Top 3 M11

Longest winning streak1

Current streak0

Records

50 km3h39'58 100 km8h56'21 50 mi6h11'52 100 mi20h23'37

HISTORY

130 race(s)

Date		Race	Perf.	Rk
2025
29.11	28.4mi	40th Quad Dipsea Trail Run	7:33:28 h	203
16.08	31.5mi	24th Tamalpa Headlands 50K	6:23:30 h	143
2023
19.08	31.5mi	22nd Tamalpa Headlands 50K	6:34:20 h	108
04.03	50km	33rd Way Too Cool 50K Endurance Run	5:56:03 h	131
2022
08.10	100km	11th Cuyamaca 100 km Endurance Run	15:36:53 h	85
05.03	50km	32nd Way Too Cool 50K Endurance Run	5:40:33 h	169
2021
05.06	50km	6th Ruck a Chuck 50K	6:58:02 h	25
24.04	100km	8th The Canyons Endurance 100 km Run	16:23:05 h	158
2020
07.03	50km	31st Way Too Cool 50K Endurance Run	5:46:43 h	224
2019
30.11	28mi	35th Quad Dipsea Trail Run	6:14:21 h	94
2017
25.11	28mi	33rd Quad Dipsea Trail Run	5:59:51 h	64
2016
26.11	28mi	32nd Quad Dipsea Trail Run	6:17:57 h	88
13.02	100km	3rd Black Canyon Trail 100 km Run	13:17:17 h	49
2015
28.11	28mi	31st Quad Dipsea Trail Run	4:59:44 h	17
29.08	31.5mi	16th Tamalpa Headlands 50K	6:25:22 h	117
27.06	100mi	42nd Western States 100 Mile Endurance Run	26:31:40 h	125
02.05	100km	2nd The Canyons Endurance 100 km Run	13:55:03 h	16
07.03	50km	26th Way Too Cool 50K Endurance Run	4:38:03 h	117
2014
29.11	28mi	30th Quad Dipsea Trail Run	5:16:04 h	24
23.08	31.5mi	15th Tamalpa Headlands 50K	5:05:52 h	24
28.06	100mi	41st Western States 100 Mile Endurance Run	27:34:34 h	203
03.05	50km	1st The Canyons Endurance 50 km Run	6:23:28 h	13
05.04	50mi	35th American River 50 Mile Endurance Run	8:00:48 h	41
08.03	50km	25th Way Too Cool 50K Endurance Run	4:48:56 h	123
2013
30.11	28mi	29th Quad Dipsea Trail Run	5:00:15 h	17
14.09	50mi	7th Headlands Hundred 50 Mile Endurance Run	9:48:23 h	32
24.08	31.5mi	14th Tamalpa Headlands 50K	5:42:25 h	44
2012
24.11	28mi	28th Quad Dipsea Trail Run	5:39:34 h	30
25.08	31.5mi	13th Tamalpa Headlands 50K	5:39:57 h	47
10.03	50km	23rd Way Too Cool 50K Endurance Run	4:46:15 h	123
04.02	50km	34th Jed Smith Ultra Classic - 50 km Race	4:31:10 h	27
2011
26.11	28mi	27th Quad Dipsea Trail Run	5:09:37 h	26
2010
27.11	28mi	26th Quad Dipsea Trail Run	5:46:20 h	52
09.10	50mi	28th Dick Collins Firetrails 50 Mile	9:05:20 h	54
2009
28.11	28mi	25th Quad Dipsea Trail Run	4:40:28 h	7
02.08	50km	28th Skyline 50k Endurance Run	4:40:02 h	10
04.04	50mi	30th American River 50 Mile Endurance Run	7:40:58 h	42
14.03	50km	20th Way Too Cool 50K Endurance Run	4:31:48 h	57
2008
29.11	28mi	24th Quad Dipsea Trail Run	4:33:35 h	9
18.05	50km	21st Ohlone 50K Wilderness Run	6:21:09 h	19
2007
24.11	28mi	23rd Quad Dipsea Trail Run	4:37:59 h	6
23.06	100mi	34th Western States 100 Mile Endurance Run	23:46:05 h	93
20.05	50km	20th Ohlone 50K Wilderness Run	5:21:37 h	9
05.05	100km	12th Miwok 100k Trail race	10:31:24 h	27
14.04	50mi	28th American River 50 Mile Endurance Run	8:31:30 h	87
10.03	50km	18th Way Too Cool 50K Endurance Run	4:03:25 h	13
03.02	50km	29th Jed Smith Ultra Classic - 50 km Race	3:53:01 h	8
2006
25.11	28mi	22nd Quad Dipsea Trail Run	4:32:04 h	7
24.06	100mi	33th Western States 100 Mile Endurance Run	23:29:25 h	38
06.05	100km	11th Miwok 100k Trail race	9:58:19 h	27
01.04	50mi	27th American River 50 Mile Endurance Run	7:32:05 h	20
11.03	50km	17th Way Too Cool 50K Endurance Run	4:23:40 h	25
04.02	50km	28th Jed Smith Ultra Classic - 50 km Race	4:33:14 h	18
2005
26.11	28mi	21st Quad Dipsea Trail Run	4:25:14 h	4
15.10	50mi	23rd Dick Collins Firetrails 50 Mile	8:32:28 h	16
12.03	50km	16th Way Too Cool 50K Endurance Run	5:29:40 h	140
2004
26.06	100mi	31th Western States 100 Mile Endurance Run	23:03:51 h	53
01.05	100km	9th Miwok 100k Trail race	10:24:56 h	17
03.04	50mi	25th American River 50 Mile Endurance Run	7:14:12 h	11
13.03	50km	15th Way Too Cool 50K Endurance Run	4:15:33 h	17
2003
29.11	28mi	19th Quad Dipsea Trail Run	5:02:54 h	26
05.04	50mi	24th American River 50 Mile Endurance Run	6:46:09 h	8
2002
30.11	28mi	18th Quad Dipsea Trail Run	4:33:33 h	7
22.09	50km	3rd Whiskeytown 50km Trail Run	5:18:27 h	8
04.08	50km	21st Skyline 50k Endurance Run	4:36:04 h	11
06.04	50mi	23rd American River 50 Mile Endurance Run	7:06:53 h	16
09.03	50km	13th Way Too Cool 50K Endurance Run	4:11:55 h	23
2001
24.11	28mi	17th Quad Dipsea Trail Run	4:24:13 h	3 🥉
13.10	50mi	19th Dick Collins Firetrails 50 Mile	8:57:33 h	20
05.08	50km	20th Skyline 50k Endurance Run	4:15:53 h	8
28.07	50mi	9th White River 50 Mile Trail Run	9:07:17 h	45
07.04	50mi	22nd American River 50 Mile Endurance Run	6:39:29 h	4
10.03	50km	12th Way Too Cool 50K Endurance Run	3:50:13 h	5
10.02	50km	23rd Jed Smith Ultra Classic - 50 km Race	3:39:58 h	7
2000
25.11	28mi	16th Quad Dipsea Trail Run	4:18:53 h	3 🥉
05.08	50km	19th Skyline 50k Endurance Run	4:20:43 h	9
20.05	50km	15th Silver State 50 km	5:42:29 h	4
13.05	50km	17th Quicksilver 50 km Endurance Run	4:55:42 h	15
01.04	50mi	21st American River 50 Mile Endurance Run	7:31:59 h	19
1999
27.11	28mi	15th Quad Dipsea Trail Run	4:20:13 h	3 🥉
07.08	50km	18th Skyline 50k Endurance Run	4:13:52 h	5
26.06	100mi	26th Western States 100 Mile Endurance Run	22:26:10 h	33
15.05	50km	14th Silver State 50 km	6:07:46 h	5
01.05	100km	4th Miwok 100k Trail race	10:43:16 h	17
10.04	50mi	20th American River 50 Mile Endurance Run	7:07:07 h	25
13.03	50km	10th Way Too Cool 50K Endurance Run	4:00:42 h	6
1998
28.11	28mi	14th Quad Dipsea Trail Run	4:22:27 h	3 🥉
24.10	52.4mi	12th Sierra Nevada Endurance 52 Mile Run	8:35:35 h	5
10.10	50mi	16th Dick Collins Firetrails 50 Mile	7:17:32 h	2 🥈
29.08	31.5mi	1st Tamalpa Headlands 50K	4:16:28 h	3 🥉
01.08	50km	17th Skyline 50k Endurance Run	4:18:25 h	6
27.06	100mi	25th Western States 100 Mile Endurance Run	23:10:44 h	36
16.05	50km	13th Silver State 50 km	6:58:42 h	10
04.04	50mi	19th American River 50 Mile Endurance Run	6:52:41 h	17
14.03	50km	9th Way Too Cool 50K Endurance Run	3:52:55 h	4
07.02	50km	20th Jed Smith Ultra Classic - 50 km Race	3:57:14 h	12
1997
29.11	28mi	13th Quad Dipsea Trail Run	4:18:50 h	5
20.10	50mi	15th Dick Collins Firetrails 50 Mile	7:25:00 h	3 🥉
06.09	50km	3rd Point Reyes 50K	4:24:16 h	6
02.08	50km	16th Skyline 50k Endurance Run	4:13:14 h	10
28.06	100mi	24th Western States 100 Mile Endurance Run	20:23:37 h	16
17.05	50km	12th Silver State 50 km	6:03:47 h	7
10.05	50km	14th Quicksilver 50 km Endurance Run	4:16:33 h	8
19.04	50mi	12th Ruth Anderson Ultra 100km - 50mi Split	7:05:08 h	8
19.04	100km	12th Ruth Anderson Ultra 100km	8:56:21 h	7
05.04	50mi	18th American River 50 Mile Endurance Run	6:16:34 h	5
15.03	50km	8th Way Too Cool 50K Endurance Run	3:46:07 h	5
18.01	50km	19th Jed Smith Ultra Classic - 50 km Race	3:41:22 h	6
1996
30.11	28mi	12th Quad Dipsea Trail Run	4:27:41 h	5
24.08	50km	2nd Point Reyes 50K	5:14:35 h	30
29.06	100mi	23rd Western States 100 Mile Endurance Run	22:51:04 h	33
18.05	50km	11th Silver State 50 km	6:37:38 h	5
11.05	50km	13th Quicksilver 50 km Endurance Run	3:44:03 h	1 🏆
06.04	50mi	17th American River 50 Mile Endurance Run	6:11:52 h	3 🥉
09.03	50km	7th Way Too Cool 50K Endurance Run	3:46:50 h	4
06.01	50mi	16th Avalon Benefit 50-Mile Run	7:31:00 h	6
1995
25.11	28mi	11th Quad Dipsea Trail Run	4:32:55 h	8
09.09	50mi	1st Cameron Park 50 Mile	6:25:59 h	3 🥉
06.08	50km	14th Skyline 50k Endurance Run	4:08:27 h	4
20.05	50km	10th Silver State 50 km	6:53:01 h	5
01.04	50mi	16th American River 50 Mile Endurance Run	6:57:26 h	17
05.02	50km	17th Jed Smith Ultra Classic - 50 km Race	3:39:59 h	5
1994
26.11	28mi	10th Quad Dipsea Trail Run	4:21:50 h	4
23.06	100mi	21st Western States 100 Mile Endurance Run	26:31:57 h	115
02.04	50mi	15th American River 50 Mile Endurance Run	7:01:13 h	25
12.03	50km	5th Way Too Cool 50K Endurance Run	4:03:33 h	11
1993
27.11	28mi	9th Quad Dipsea Trail Run	4:21:52 h	5
09.10	50mi	11th Dick Collins Firetrails 50 Mile	7:51:00 h	7
01.08	50km	12th Skyline 50k Endurance Run	4:23:42 h	5
1992
28.11	28mi	8th Quad Dipsea Trail Run	4:26:14 h	3 🥉

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	27/6/2015	42nd Western States 100 Mile Endurance Run	160,93	×2
✓ 2	28/6/2014	41st Western States 100 Mile Endurance Run	160,93	×2
✓ 3	23/6/2007	34th Western States 100 Mile Endurance Run	160,93	×2
✓ 4	24/6/2006	33th Western States 100 Mile Endurance Run	160,93	×2
✓ 5	26/6/2004	31th Western States 100 Mile Endurance Run	160,93	×2
✓ 6	26/6/1999	26th Western States 100 Mile Endurance Run	160,93	×2
✓ 7	27/6/1998	25th Western States 100 Mile Endurance Run	160,93	×2
✓ 8	28/6/1997	24th Western States 100 Mile Endurance Run	160,93	×2
✓ 9	29/6/1996	23rd Western States 100 Mile Endurance Run	160,93	×2
✓ 10	23/6/1994	21st Western States 100 Mile Endurance Run	160,93	×2
✓ 11	8/10/2022	11th Cuyamaca 100 km Endurance Run	100,00	×1
✓ 12	24/4/2021	8th The Canyons Endurance 100 km Run	100,00	×1
✓ 13	13/2/2016	3rd Black Canyon Trail 100 km Run	100,00	×1
✓ 14	2/5/2015	2nd The Canyons Endurance 100 km Run	100,00	×1
✓ 15	5/5/2007	12th Miwok 100k Trail race	100,00	×1
✓ 16	6/5/2006	11th Miwok 100k Trail race	100,00	×1
✓ 17	1/5/2004	9th Miwok 100k Trail race	100,00	×1
✓ 18	1/5/1999	4th Miwok 100k Trail race	100,00	×1
✓ 19	19/4/1997	12th Ruth Anderson Ultra 100km	100,00	×1
✓ 20	24/10/1998	12th Sierra Nevada Endurance 52 Mile Run	84,33	×1
✓ 21	5/4/2014	35th American River 50 Mile Endurance Run	80,47	×1
✓ 22	14/9/2013	7th Headlands Hundred 50 Mile Endurance Run	80,47	×1
✓ 23	9/10/2010	28th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 24	4/4/2009	30th American River 50 Mile Endurance Run	80,47	×1
✓ 25	14/4/2007	28th American River 50 Mile Endurance Run	80,47	×1
✓ 26	1/4/2006	27th American River 50 Mile Endurance Run	80,47	×1
✓ 27	15/10/2005	23rd Dick Collins Firetrails 50 Mile	80,47	×1
✓ 28	3/4/2004	25th American River 50 Mile Endurance Run	80,47	×1
✓ 29	5/4/2003	24th American River 50 Mile Endurance Run	80,47	×1
✓ 30	6/4/2002	23rd American River 50 Mile Endurance Run	80,47	×1
✓ 31	13/10/2001	19th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 32	28/7/2001	9th White River 50 Mile Trail Run	80,47	×1
✓ 33	7/4/2001	22nd American River 50 Mile Endurance Run	80,47	×1
✓ 34	1/4/2000	21st American River 50 Mile Endurance Run	80,47	×1
✓ 35	10/4/1999	20th American River 50 Mile Endurance Run	80,47	×1
✓ 36	10/10/1998	16th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 37	4/4/1998	19th American River 50 Mile Endurance Run	80,47	×1
✓ 38	20/10/1997	15th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 39	5/4/1997	18th American River 50 Mile Endurance Run	80,47	×1
✓ 40	6/4/1996	17th American River 50 Mile Endurance Run	80,47	×1
✓ 41	6/1/1996	16th Avalon Benefit 50-Mile Run	80,47	×1
✓ 42	9/9/1995	1st Cameron Park 50 Mile	80,47	×1
✓ 43	1/4/1995	16th American River 50 Mile Endurance Run	80,47	×1
✓ 44	2/4/1994	15th American River 50 Mile Endurance Run	80,47	×1
✓ 45	9/10/1993	11th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 46	16/8/2025	24th Tamalpa Headlands 50K	50,69	—
✓ 47	19/8/2023	22nd Tamalpa Headlands 50K	50,69	—
✓ 48	29/8/2015	16th Tamalpa Headlands 50K	50,69	—
✓ 49	23/8/2014	15th Tamalpa Headlands 50K	50,69	—
✓ 50	24/8/2013	14th Tamalpa Headlands 50K	50,69	—
51	25/8/2012	13th Tamalpa Headlands 50K	50,69	—
52	29/8/1998	1st Tamalpa Headlands 50K	50,69	—
53	4/3/2023	33rd Way Too Cool 50K Endurance Run	50,00	—
54	5/3/2022	32nd Way Too Cool 50K Endurance Run	50,00	—
55	5/6/2021	6th Ruck a Chuck 50K	50,00	—
56	7/3/2020	31st Way Too Cool 50K Endurance Run	50,00	—
57	7/3/2015	26th Way Too Cool 50K Endurance Run	50,00	—
58	3/5/2014	1st The Canyons Endurance 50 km Run	50,00	—
59	8/3/2014	25th Way Too Cool 50K Endurance Run	50,00	—
60	10/3/2012	23rd Way Too Cool 50K Endurance Run	50,00	—
61	4/2/2012	34th Jed Smith Ultra Classic - 50 km Race	50,00	—
62	2/8/2009	28th Skyline 50k Endurance Run	50,00	—
63	14/3/2009	20th Way Too Cool 50K Endurance Run	50,00	—
64	18/5/2008	21st Ohlone 50K Wilderness Run	50,00	—
65	20/5/2007	20th Ohlone 50K Wilderness Run	50,00	—
66	10/3/2007	18th Way Too Cool 50K Endurance Run	50,00	—
67	3/2/2007	29th Jed Smith Ultra Classic - 50 km Race	50,00	—
68	11/3/2006	17th Way Too Cool 50K Endurance Run	50,00	—
69	4/2/2006	28th Jed Smith Ultra Classic - 50 km Race	50,00	—
70	12/3/2005	16th Way Too Cool 50K Endurance Run	50,00	—
71	13/3/2004	15th Way Too Cool 50K Endurance Run	50,00	—
72	22/9/2002	3rd Whiskeytown 50km Trail Run	50,00	—
73	4/8/2002	21st Skyline 50k Endurance Run	50,00	—
74	9/3/2002	13th Way Too Cool 50K Endurance Run	50,00	—
75	5/8/2001	20th Skyline 50k Endurance Run	50,00	—
76	10/3/2001	12th Way Too Cool 50K Endurance Run	50,00	—
77	10/2/2001	23rd Jed Smith Ultra Classic - 50 km Race	50,00	—
78	5/8/2000	19th Skyline 50k Endurance Run	50,00	—
79	20/5/2000	15th Silver State 50 km	50,00	—
80	13/5/2000	17th Quicksilver 50 km Endurance Run	50,00	—
81	7/8/1999	18th Skyline 50k Endurance Run	50,00	—
82	15/5/1999	14th Silver State 50 km	50,00	—
83	13/3/1999	10th Way Too Cool 50K Endurance Run	50,00	—
84	1/8/1998	17th Skyline 50k Endurance Run	50,00	—
85	16/5/1998	13th Silver State 50 km	50,00	—
86	14/3/1998	9th Way Too Cool 50K Endurance Run	50,00	—
87	7/2/1998	20th Jed Smith Ultra Classic - 50 km Race	50,00	—
88	6/9/1997	3rd Point Reyes 50K	50,00	—
89	2/8/1997	16th Skyline 50k Endurance Run	50,00	—
90	17/5/1997	12th Silver State 50 km	50,00	—
91	10/5/1997	14th Quicksilver 50 km Endurance Run	50,00	—
92	15/3/1997	8th Way Too Cool 50K Endurance Run	50,00	—
93	18/1/1997	19th Jed Smith Ultra Classic - 50 km Race	50,00	—
94	24/8/1996	2nd Point Reyes 50K	50,00	—
95	18/5/1996	11th Silver State 50 km	50,00	—
96	11/5/1996	13th Quicksilver 50 km Endurance Run	50,00	—
97	9/3/1996	7th Way Too Cool 50K Endurance Run	50,00	—
98	6/8/1995	14th Skyline 50k Endurance Run	50,00	—
99	20/5/1995	10th Silver State 50 km	50,00	—
100	5/2/1995	17th Jed Smith Ultra Classic - 50 km Race	50,00	—
101	12/3/1994	5th Way Too Cool 50K Endurance Run	50,00	—
102	1/8/1993	12th Skyline 50k Endurance Run	50,00	—
103	29/11/2025	40th Quad Dipsea Trail Run	45,71	—
104	30/11/2019	35th Quad Dipsea Trail Run	45,06	—
105	25/11/2017	33rd Quad Dipsea Trail Run	45,06	—
106	26/11/2016	32nd Quad Dipsea Trail Run	45,06	—
107	28/11/2015	31st Quad Dipsea Trail Run	45,06	—
108	29/11/2014	30th Quad Dipsea Trail Run	45,06	—
109	30/11/2013	29th Quad Dipsea Trail Run	45,06	—
110	24/11/2012	28th Quad Dipsea Trail Run	45,06	—
111	26/11/2011	27th Quad Dipsea Trail Run	45,06	—
112	27/11/2010	26th Quad Dipsea Trail Run	45,06	—
113	28/11/2009	25th Quad Dipsea Trail Run	45,06	—
114	29/11/2008	24th Quad Dipsea Trail Run	45,06	—
115	24/11/2007	23rd Quad Dipsea Trail Run	45,06	—
116	25/11/2006	22nd Quad Dipsea Trail Run	45,06	—
117	26/11/2005	21st Quad Dipsea Trail Run	45,06	—
118	29/11/2003	19th Quad Dipsea Trail Run	45,06	—
119	30/11/2002	18th Quad Dipsea Trail Run	45,06	—
120	24/11/2001	17th Quad Dipsea Trail Run	45,06	—
121	25/11/2000	16th Quad Dipsea Trail Run	45,06	—
122	27/11/1999	15th Quad Dipsea Trail Run	45,06	—
123	28/11/1998	14th Quad Dipsea Trail Run	45,06	—
124	29/11/1997	13th Quad Dipsea Trail Run	45,06	—
125	30/11/1996	12th Quad Dipsea Trail Run	45,06	—
126	25/11/1995	11th Quad Dipsea Trail Run	45,06	—
127	26/11/1994	10th Quad Dipsea Trail Run	45,06	—
128	27/11/1993	9th Quad Dipsea Trail Run	45,06	—
129	28/11/1992	8th Quad Dipsea Trail Run	45,06	—