Kevin Thayer

Born : 1966 Cat. M60 Ultrarunner since 2011

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

21,5%

Rank quotient ?This runner's calculation uses 138 eligible race(s): Σ(rank − 1) = 3 230; Σ finishers = 15 041. 3 230 / 15 041 × 100 = 21.47%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed138

Km — ultra races7 270 km

Longest race80,5 km

11th Run-de-Vous 50 Mile Endurance Run — 25/8/2023

Km per year (ultra races)

395

2022

1 262

2023

300

2024

256

2025

150

2026

Race types (share of distance)

Road4,6%

Trail95,4%

Wins & podiums (ultra)

🏆 Win3

🏆 Win M4

🏅 Top 311

🏅 Top 3 M14

Longest winning streak1

Current streak0

Records

50 km4h18'00 50 mi7h43'21 6 h56,21 km

HISTORY

138 race(s)

Date		Race	Perf.	Rk
2026
20.06	50km	8th Golden State 50K	5:26:11 h	17
28.02	50km	1st SoCalUltraTrail at Tejon Ranch	7:40:22 h	50
07.02	50km	14th Fort Ord 50K Trail Run	6:03:57 h	18
2025
03.08	50km	44th Skyline 50k Endurance Run	6:21:23 h	74
21.06	50km	7th Golden State 50K	5:45:55 h	18
07.06	6h	4th SF Half Day 6h	56.214 km	4
22.02	50km	10th Salmon Falls 50 km Race	6:02:32 h	51
25.01	50km	13th Fort Ord 50K Trail Run	5:54:42 h	27
2024
18.05	50km	3rd Napa Wilderness Trail Runs	6:27:25 h	5
11.05	50km	41th Quicksilver 50 km Endurance Run	6:32:17 h	37
20.04	50km	31st Leona Divide 50 km Run	8:02:51 h	32
16.03	50km	7th Ruck a Chuck 50K	6:55:10 h	39
09.03	50km	12th Marin Ultra Challenge 50 km Race	5:28:00 h	49
27.01	50km	12th Fort Ord 50K Trail Run	5:24:29 h	11
2023
02.12	50km	10th San Joaquin River Trail 50K Run	6:46:47 h	29
25.11	28mi	38th Quad Dipsea Trail Run	6:26:35 h	157
04.11	50km	12th Lake Chabot 50 km Trail Run	5:50:11 h	7
21.10	55km	3rd Lake Sonoma 100K & 50K	7:18:34 h	36
14.10	50km	37th Ruth Anderson Ultra 50km	4:44:30 h	19
24.09	50km	2nd South Hills Single Track Trail Run - Summer	6:06:11 h	9
09.09	50km	3rd China Peak Running Festival 50 km Race	6:36:18 h	4
03.09	50km	13th Crystal Springs 50 km Summer Trail Run	6:15:36 h	17
25.08	50mi	11th Run-de-Vous 50 Mile Endurance Run	10:47:48 h	4
19.08	31.5mi	22nd Tamalpa Headlands 50K	6:36:22 h	111
06.08	50km	42nd Skyline 50k Endurance Run	5:49:00 h	25
01.07	50km	5th Golden State 50K	5:12:12 h	10
15.06	50km	14th San Lorenzo River Trail Run	5:33:01 h	4
10.06	50km	2nd Mt. Umunhum Ultras - 50 km	6:12:00 h	3 🥉
10.06	50km	34th Shadow of the Giants 50K	4:48:02 h	11
03.06	50km	11th Marin Ultra Challenge 50 km Race	5:10:08 h	11
20.05	50km	10th San Francisco 50 km Endurance Run	5:19:29 h	5
13.05	50km	40th Quicksilver 50 km Endurance Run	5:46:06 h	10
16.04	50km	7th Napa Valley 50k Trail Race	7:54:43 h	28
08.04	50km	14th Diablo Trails Challenge	6:27:00 h	15
01.04	50mi	43th American River 50 Mile Endurance Run	11:33:13 h	110
18.02	50km	11th FOURmidable 50K	6:21:17 h	99
04.02	50km	5th Mount Umunhum Trail Run	6:12:00 h	3 🥉
28.01	50km	11th Fort Ord 50K Trail Run	5:35:28 h	16
2022
26.11	28mi	37th Quad Dipsea Trail Run	6:16:39 h	101
08.10	50km	36th Ruth Anderson Ultra 50km	4:20:14 h	6
07.08	50km	41st Skyline 50k Endurance Run	6:24:56 h	76
17.07	50km	4th Big Chief 50K Trail Run	6:44:21 h	41
14.05	50km	39th Quicksilver 50 km Endurance Run	7:07:32 h	55
16.04	50km	6th Napa Valley 50k Trail Race	8:06:55 h	14
19.02	50km	10th FOURmidable 50K	6:52:16 h	96
05.02	50km	10th Fort Ord 50K Trail Run	5:48:59 h	23
2021
18.12	50km	10th Woodside Ramble 50K - Winter	5:20:31 h	22
11.12	50km	17th Rodeo Beach 50km	6:19:38 h	10
04.12	50km	8th San Joaquin River Trail 50K Run	6:10:06 h	13
27.11	50km	5th Napa Valley 50k Trail Race	7:42:35 h	14
13.11	50km	9th Mt. Tam Trail Run	6:35:42 h	67
06.11	50km	18th Woodside Trail Run 50K	6:17:21 h	3 🥉
23.10	50km	38th Quicksilver 50 km Endurance Run	5:32:32 h	29
09.10	50km	35th Ruth Anderson Ultra 50km	5:21:01 h	13
25.09	50mi	39th Dick Collins Firetrails 50 Mile	11:24:38 h	22
21.08	50km	4th Golden State 50K	5:18:12 h	19
07.08	50km	10th Rodeo Valley 50 km Trail Run	5:44:47 h	24
24.07	50km	9th Fort Ord 50K Trail Run	5:14:28 h	16
2020
01.02	50km	8th Fort Ord 50K Trail Run	5:24:09 h	18
2019
21.12	50km	8th Woodside Ramble 50K - Winter	5:56:34 h	35
02.02	50km	7th Fort Ord 50K Trail Run	5:01:58 h	16
20.01	50km	9th Crystal Springs 50 km Winter Trail Run	5:17:29 h	7
2018
03.11	50km	16th Woodside Trail Run 50K	5:35:24 h	16
20.10	50km	Saratoga Trail Run 50km	6:32:43 h	20
06.10	50km	10th Skyline to the Sea 50km	5:27:21 h	31
16.09	50km	1st Whiskey Hill Redwood Run	4:55:04 h	2 🥈
25.08	31.5mi	19th Tamalpa Headlands 50K	6:19:59 h	44
18.08	50km	1st Golden State 50K	4:56:09 h	3 🥉
05.08	50km	37th Skyline 50k Endurance Run	5:11:06 h	29
17.03	50km	13th Montaña de Oro 50 km Race	5:23:34 h	10
10.03	50km	7th Marin Ultra Challenge 50 km Race	5:14:26 h	38
24.02	52km	1st Mount Umunhum Trail Run	5:53:01 h	16
17.02	50km	8th Chabot Trail Run	5:27:26 h	13
10.02	50km	8th Golden Gate 50 km Winter Trail Run	5:46:45 h	11
03.02	50km	6th Fort Ord 50K Trail Run	4:57:46 h	12
21.01	50km	8th Crystal Springs 50 km Winter Trail Run	5:12:50 h	9
13.01	50km	8th Steep Ravine 50 km Trail Run	5:35:50 h	3 🥉
2017
16.12	50km	6th Woodside Ramble 50K - Winter	5:00:33 h	19
09.12	50km	13th Rodeo Beach 50km	5:38:39 h	19
18.11	50km	15th Woodside Trail Run 50K	5:03:57 h	4
11.11	50km	6th Mt. Tam Trail Run	5:57:34 h	20
19.08	50km	7th Run-de-Vous 50 km Endurance Run	4:45:54 h	1 🏆
06.08	50km	36th Skyline 50k Endurance Run	5:15:23 h	35
18.03	50km	1st San Jose Trail Run	6:09:00 h	9
11.03	50km	6th Marin Ultra Challenge 50 km Race	5:47:05 h	68
2016
12.11	50km	5th Mt. Tam Trail Run	6:20:31 h	49
08.10	50mi	34th Dick Collins Firetrails 50 Mile	10:42:58 h	47
2015
27.12	50km	14th Woodside Trail Run 50K	5:30:07 h	25
18.04	50km	29th Ruth Anderson Ultra 50km	4:29:34 h	7
12.04	50km	1st Woodside Purisima Creek Crossover	5:41:39 h	15
04.04	50mi	36th American River 50 Mile Endurance Run	8:52:59 h	74
14.03	50mi	4th Marin Ultra Challenge 50 Mile Race	11:44:34 h	47
21.02	50km	5th Chabot Trail Run	4:50:59 h	11
31.01	50km	3rd Fort Ord 50K Trail Run	4:47:54 h	4
11.01	50km	5th Crystal Springs 50 km Winter Trail Run	4:44:14 h	8
2014
28.12	50km	13th Woodside Trail Run 50K	4:56:01 h	13
03.08	50km	33rd Skyline 50k Endurance Run	4:47:36 h	26
12.07	50km	11th Pacifica 50 km Trail Run	5:41:36 h	6
21.06	50km	5th San Lorenzo River Trail Run	4:55:41 h	4
18.05	50km	27th Ohlone 50K Wilderness Run	5:41:59 h	15
10.05	50km	31st Quicksilver 50 km Endurance Run	4:47:13 h	7
19.04	50mi	Mokelumne River 50 Mile Trail Run	10:36:21 h	11
05.04	50mi	35th American River 50 Mile Endurance Run	8:39:13 h	91
15.03	50km	3rd Marin Ultra Challenge 50 km Race	4:41:27 h	4
08.02	50km	4th Golden Gate 50 km Winter Trail Run	5:31:20 h	7
01.02	50km	2nd Fort Ord 50K Trail Run	5:15:13 h	8
18.01	50km	3rd Pacifica Foothills Trail Run	5:26:11 h	5
11.01	50km	4th Crystal Springs 50 km Winter Trail Run	4:34:50 h	6
2013
29.12	50km	12th Woodside Trail Run 50K	5:02:53 h	18
15.12	50km	2nd Woodside Ramble 50K - Winter	4:55:28 h	7
12.10	50mi	31st Dick Collins Firetrails 50 Mile	9:47:04 h	91
21.09	50km	3rd Coastal 50 km Trail Run	4:45:42 h	5
17.08	50km	3rd Run-de-Vous 50 km Endurance Run	4:18:00 h	1 🏆
11.08	50km	32nd Skyline 50k Endurance Run	4:19:57 h	13
03.08	50km	2nd Santa Cruz Trail Run	5:20:58 h	5
14.07	50km	3rd Golden Gate 50 km Summer Trail Run	4:59:44 h	6
06.07	50km	2nd Calero Run 50K	5:00:08 h	1 🏆
11.05	50km	30th Quicksilver 50 km Endurance Run	4:53:04 h	7
06.04	50mi	34th American River 50 Mile Endurance Run	8:55:28 h	137
23.02	50km	3rd Chabot Trail Run	4:55:05 h	12
02.02	50km	1st Fort Ord 50K Trail Run	4:45:34 h	11
2012
13.10	50km	2nd Horseshoe Lake 50 km Fall Trail Run	4:47:37 h	4
22.09	50km	2nd Coastal 50 km Trail Run	5:11:57 h	5
15.09	50km	3rd Diablo 50 km Trail Run	6:06:14 h	2 🥈
08.09	50km	11th Stevens Creek Striders 50K	5:37:30 h	3 🥉
12.08	50km	31st Skyline 50k Endurance Run	4:40:10 h	19
04.08	50km	1st Santa Cruz Trail Run	6:06:33 h	8
23.06	50km	3rd San Lorenzo River Trail Run	6:01:02 h	13
12.05	50km	29th Quicksilver 50 km Endurance Run	5:20:20 h	17
07.04	50mi	33rd American River 50 Mile Endurance Run	8:13:30 h	78
24.03	50km	1st Woodside Ramble 50K - Spring	4:41:00 h	6
17.03	50km	2nd Canyon Meadow (Winter) 50 km Trail Run	4:55:02 h	11
03.03	50km	2nd Montara Mountain 50 km Trail Run	5:00:48 h	6
25.02	50km	2nd Chabot Trail Run	4:53:56 h	12
04.02	50mi	34th Jed Smith Ultra Classic - 50 Mile Race	7:43:21 h	6
28.01	50km	2nd Steep Ravine 50 km Trail Run	5:28:23 h	7
07.01	50km	2nd Crystal Springs 50 km Winter Trail Run	4:39:37 h	8
2011
07.08	50km	30th Skyline 50k Endurance Run	4:32:07 h	12

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	25/8/2023	11th Run-de-Vous 50 Mile Endurance Run	80,47	×1
✓ 2	1/4/2023	43th American River 50 Mile Endurance Run	80,47	×1
✓ 3	25/9/2021	39th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 4	8/10/2016	34th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 5	4/4/2015	36th American River 50 Mile Endurance Run	80,47	×1
✓ 6	14/3/2015	4th Marin Ultra Challenge 50 Mile Race	80,47	×1
✓ 7	19/4/2014	Mokelumne River 50 Mile Trail Run	80,47	×1
✓ 8	5/4/2014	35th American River 50 Mile Endurance Run	80,47	×1
✓ 9	12/10/2013	31st Dick Collins Firetrails 50 Mile	80,47	×1
✓ 10	6/4/2013	34th American River 50 Mile Endurance Run	80,47	×1
✓ 11	7/4/2012	33rd American River 50 Mile Endurance Run	80,47	×1
✓ 12	4/2/2012	34th Jed Smith Ultra Classic - 50 Mile Race	80,47	×1
✓ 13	7/6/2025	4th SF Half Day 6h	56,21	×1
✓ 14	21/10/2023	3rd Lake Sonoma 100K & 50K	55,00	×1
✓ 15	24/2/2018	1st Mount Umunhum Trail Run	52,00	×1
✓ 16	19/8/2023	22nd Tamalpa Headlands 50K	50,69	×1
✓ 17	25/8/2018	19th Tamalpa Headlands 50K	50,69	×1
✓ 18	20/6/2026	8th Golden State 50K	50,00	×1
✓ 19	28/2/2026	1st SoCalUltraTrail at Tejon Ranch	50,00	×1
✓ 20	7/2/2026	14th Fort Ord 50K Trail Run	50,00	×1
✓ 21	3/8/2025	44th Skyline 50k Endurance Run	50,00	×1
✓ 22	21/6/2025	7th Golden State 50K	50,00	×1
✓ 23	22/2/2025	10th Salmon Falls 50 km Race	50,00	×1
✓ 24	25/1/2025	13th Fort Ord 50K Trail Run	50,00	×1
✓ 25	18/5/2024	3rd Napa Wilderness Trail Runs	50,00	×1
✓ 26	11/5/2024	41th Quicksilver 50 km Endurance Run	50,00	×1
✓ 27	20/4/2024	31st Leona Divide 50 km Run	50,00	×1
✓ 28	16/3/2024	7th Ruck a Chuck 50K	50,00	×1
✓ 29	9/3/2024	12th Marin Ultra Challenge 50 km Race	50,00	×1
✓ 30	27/1/2024	12th Fort Ord 50K Trail Run	50,00	×1
✓ 31	2/12/2023	10th San Joaquin River Trail 50K Run	50,00	×1
✓ 32	4/11/2023	12th Lake Chabot 50 km Trail Run	50,00	×1
✓ 33	14/10/2023	37th Ruth Anderson Ultra 50km	50,00	×1
✓ 34	24/9/2023	2nd South Hills Single Track Trail Run - Summer	50,00	×1
✓ 35	9/9/2023	3rd China Peak Running Festival 50 km Race	50,00	×1
✓ 36	3/9/2023	13th Crystal Springs 50 km Summer Trail Run	50,00	×1
✓ 37	6/8/2023	42nd Skyline 50k Endurance Run	50,00	×1
✓ 38	1/7/2023	5th Golden State 50K	50,00	×1
✓ 39	15/6/2023	14th San Lorenzo River Trail Run	50,00	×1
✓ 40	10/6/2023	2nd Mt. Umunhum Ultras - 50 km	50,00	×1
✓ 41	3/6/2023	11th Marin Ultra Challenge 50 km Race	50,00	×1
✓ 42	20/5/2023	10th San Francisco 50 km Endurance Run	50,00	×1
✓ 43	13/5/2023	40th Quicksilver 50 km Endurance Run	50,00	×1
✓ 44	16/4/2023	7th Napa Valley 50k Trail Race	50,00	×1
✓ 45	8/4/2023	14th Diablo Trails Challenge	50,00	×1
✓ 46	18/2/2023	11th FOURmidable 50K	50,00	×1
✓ 47	4/2/2023	5th Mount Umunhum Trail Run	50,00	×1
✓ 48	28/1/2023	11th Fort Ord 50K Trail Run	50,00	×1
✓ 49	8/10/2022	36th Ruth Anderson Ultra 50km	50,00	×1
✓ 50	7/8/2022	41st Skyline 50k Endurance Run	50,00	×1
51	17/7/2022	4th Big Chief 50K Trail Run	50,00	×1
52	14/5/2022	39th Quicksilver 50 km Endurance Run	50,00	×1
53	16/4/2022	6th Napa Valley 50k Trail Race	50,00	×1
54	19/2/2022	10th FOURmidable 50K	50,00	×1
55	5/2/2022	10th Fort Ord 50K Trail Run	50,00	×1
56	18/12/2021	10th Woodside Ramble 50K - Winter	50,00	×1
57	11/12/2021	17th Rodeo Beach 50km	50,00	×1
58	4/12/2021	8th San Joaquin River Trail 50K Run	50,00	×1
59	27/11/2021	5th Napa Valley 50k Trail Race	50,00	×1
60	13/11/2021	9th Mt. Tam Trail Run	50,00	×1
61	6/11/2021	18th Woodside Trail Run 50K	50,00	×1
62	23/10/2021	38th Quicksilver 50 km Endurance Run	50,00	×1
63	9/10/2021	35th Ruth Anderson Ultra 50km	50,00	×1
64	21/8/2021	4th Golden State 50K	50,00	×1
65	7/8/2021	10th Rodeo Valley 50 km Trail Run	50,00	×1
66	24/7/2021	9th Fort Ord 50K Trail Run	50,00	×1
67	1/2/2020	8th Fort Ord 50K Trail Run	50,00	×1
68	21/12/2019	8th Woodside Ramble 50K - Winter	50,00	×1
69	2/2/2019	7th Fort Ord 50K Trail Run	50,00	×1
70	20/1/2019	9th Crystal Springs 50 km Winter Trail Run	50,00	×1
71	3/11/2018	16th Woodside Trail Run 50K	50,00	×1
72	20/10/2018	Saratoga Trail Run 50km	50,00	×1
73	6/10/2018	10th Skyline to the Sea 50km	50,00	×1
74	16/9/2018	1st Whiskey Hill Redwood Run	50,00	×1
75	18/8/2018	1st Golden State 50K	50,00	×1
76	5/8/2018	37th Skyline 50k Endurance Run	50,00	×1
77	17/3/2018	13th Montaña de Oro 50 km Race	50,00	×1
78	10/3/2018	7th Marin Ultra Challenge 50 km Race	50,00	×1
79	17/2/2018	8th Chabot Trail Run	50,00	×1
80	10/2/2018	8th Golden Gate 50 km Winter Trail Run	50,00	×1
81	3/2/2018	6th Fort Ord 50K Trail Run	50,00	×1
82	21/1/2018	8th Crystal Springs 50 km Winter Trail Run	50,00	×1
83	13/1/2018	8th Steep Ravine 50 km Trail Run	50,00	×1
84	16/12/2017	6th Woodside Ramble 50K - Winter	50,00	×1
85	9/12/2017	13th Rodeo Beach 50km	50,00	×1
86	18/11/2017	15th Woodside Trail Run 50K	50,00	×1
87	11/11/2017	6th Mt. Tam Trail Run	50,00	×1
88	19/8/2017	7th Run-de-Vous 50 km Endurance Run	50,00	×1
89	6/8/2017	36th Skyline 50k Endurance Run	50,00	×1
90	18/3/2017	1st San Jose Trail Run	50,00	×1
91	11/3/2017	6th Marin Ultra Challenge 50 km Race	50,00	×1
92	12/11/2016	5th Mt. Tam Trail Run	50,00	×1
93	27/12/2015	14th Woodside Trail Run 50K	50,00	×1
94	18/4/2015	29th Ruth Anderson Ultra 50km	50,00	×1
95	12/4/2015	1st Woodside Purisima Creek Crossover	50,00	×1
96	21/2/2015	5th Chabot Trail Run	50,00	×1
97	31/1/2015	3rd Fort Ord 50K Trail Run	50,00	×1
98	11/1/2015	5th Crystal Springs 50 km Winter Trail Run	50,00	×1
99	28/12/2014	13th Woodside Trail Run 50K	50,00	×1
100	3/8/2014	33rd Skyline 50k Endurance Run	50,00	×1
101	12/7/2014	11th Pacifica 50 km Trail Run	50,00	×1
102	21/6/2014	5th San Lorenzo River Trail Run	50,00	×1
103	18/5/2014	27th Ohlone 50K Wilderness Run	50,00	×1
104	10/5/2014	31st Quicksilver 50 km Endurance Run	50,00	×1
105	15/3/2014	3rd Marin Ultra Challenge 50 km Race	50,00	×1
106	8/2/2014	4th Golden Gate 50 km Winter Trail Run	50,00	×1
107	1/2/2014	2nd Fort Ord 50K Trail Run	50,00	×1
108	18/1/2014	3rd Pacifica Foothills Trail Run	50,00	×1
109	11/1/2014	4th Crystal Springs 50 km Winter Trail Run	50,00	×1
110	29/12/2013	12th Woodside Trail Run 50K	50,00	×1
111	15/12/2013	2nd Woodside Ramble 50K - Winter	50,00	×1
112	21/9/2013	3rd Coastal 50 km Trail Run	50,00	×1
113	17/8/2013	3rd Run-de-Vous 50 km Endurance Run	50,00	×1
114	11/8/2013	32nd Skyline 50k Endurance Run	50,00	×1
115	3/8/2013	2nd Santa Cruz Trail Run	50,00	×1
116	14/7/2013	3rd Golden Gate 50 km Summer Trail Run	50,00	×1
117	6/7/2013	2nd Calero Run 50K	50,00	×1
118	11/5/2013	30th Quicksilver 50 km Endurance Run	50,00	×1
119	23/2/2013	3rd Chabot Trail Run	50,00	×1
120	2/2/2013	1st Fort Ord 50K Trail Run	50,00	×1
121	13/10/2012	2nd Horseshoe Lake 50 km Fall Trail Run	50,00	×1
122	22/9/2012	2nd Coastal 50 km Trail Run	50,00	×1
123	15/9/2012	3rd Diablo 50 km Trail Run	50,00	×1
124	8/9/2012	11th Stevens Creek Striders 50K	50,00	×1
125	12/8/2012	31st Skyline 50k Endurance Run	50,00	×1
126	4/8/2012	1st Santa Cruz Trail Run	50,00	×1
127	23/6/2012	3rd San Lorenzo River Trail Run	50,00	×1
128	12/5/2012	29th Quicksilver 50 km Endurance Run	50,00	×1
129	24/3/2012	1st Woodside Ramble 50K - Spring	50,00	×1
130	17/3/2012	2nd Canyon Meadow (Winter) 50 km Trail Run	50,00	×1
131	3/3/2012	2nd Montara Mountain 50 km Trail Run	50,00	×1
132	25/2/2012	2nd Chabot Trail Run	50,00	×1
133	28/1/2012	2nd Steep Ravine 50 km Trail Run	50,00	×1
134	7/1/2012	2nd Crystal Springs 50 km Winter Trail Run	50,00	×1
135	7/8/2011	30th Skyline 50k Endurance Run	50,00	×1
136	25/11/2023	38th Quad Dipsea Trail Run	45,06	—
137	26/11/2022	37th Quad Dipsea Trail Run	45,06	—