John Burton

Born : 1973 Cat. M50 Ultrarunner since 2004

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 ?

Canada

United States

9,5%

Rank quotient ?This runner's calculation uses 71 eligible race(s): Σ(rank − 1) = 894; Σ finishers = 9 400. 894 / 9 400 × 100 = 9.51%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed71

Km — ultra races5 670 km

> 100 km13

> 160 km13

> 200 km1

> 24h1

Longest race325,1 km

1st Tahoe 200 Mile Endurance Run — 5/9/2014

Km per year (ultra races)

2022

161

2023

2024

261

2025

2026

Race types (share of distance)

Road5,0%

Trail95,0%

Wins & podiums (ultra)

🏆 Win5

🏆 Win M5

🏅 Top 318

🏅 Top 3 M19

Longest winning streak2

Current streak0

Records

50 km3h47'06 100 km10h20'09 50 mi7h10'46 100 mi18h36'54 24 h50,69 km

HISTORY

71 race(s)

Date		Race	Perf.	Rk
2025
02.08	100km	24th Waldo 100K Trail Run	14:40:33 h	65
20.06	100mi	1st Burney Mountain 100	23:16:00 h	6
2023
16.09	100mi	12th Idaho Mountain Trail Ultra Festival (IMTUF 100)	31:19:01 h	46
2019
19.05	50km	32nd Ohlone 50K Wilderness Run	5:30:31 h	4
23.02	52km	2nd Mount Umunhum Trail Run	5:42:51 h	7
2018
29.09	50km	5th Overlook Endurance Run 50K	4:51:28 h	5
23.06	100mi	45th Western States 100 Mile Endurance Run	21:53:21 h	55
2017
14.07	100mi	24th Hardrock Hundred Endurance Run	31:02:01 h	19
03.06	50km	15th Mount Diablo 50k	7:03:13 h	7
18.02	50km	5th FOURmidable 50K	5:01:55 h	17
2016
12.08	120mi	7th Fat Dog 120 Mile Trail Race	28:21:40 h	1 🏆
22.05	50km	29th Ohlone 50K Wilderness Run	5:25:19 h	7
14.05	100km	33rd Quicksilver 100 km Endurance Run	10:29:02 h	7
2015
07.11	100mi	15th Rio Del Lago 100 Mile Endurance Run	18:36:54 h	5
10.10	50km	7th Skyline to the Sea 50km	4:33:26 h	6
26.09	50km	13th Dances with Dirt - Hell 50K Ultra	5:00:28 h	3 🥉
20.09	50km	28th Ohlone 50K Wilderness Run	5:35:00 h	3 🥉
11.07	30mi	27th Knee Knackering North Shore Trail Run	5:57:46 h	21
16.05	50km	30th Silver State 50 km	5:24:01 h	15
2014
05.09	202mi	1st Tahoe 200 Mile Endurance Run	2d 17:02:33 h	3 🥉
03.08	50km	33rd Skyline 50k Endurance Run	4:20:05 h	10
11.07	100mi	21st Hardrock Hundred Endurance Run	30:03:00 h	12
18.05	50km	27th Ohlone 50K Wilderness Run	5:15:33 h	5
03.05	100km	19th Miwok 100k Trail Race	10:20:09 h	11
08.03	50km	25th Way Too Cool 50K Endurance Run	3:55:55 h	14
18.01	50km	3rd Pacifica Foothills Trail Run	4:43:34 h	2 🥈
2013
30.11	28mi	29th Quad Dipsea Trail Run	4:41:33 h	5
02.11	100mi	6th Pinhoti 100 Mile	21:22:40 h	14
14.09	50mi	7th Headlands Hundred 50 Mile Endurance Run	8:03:32 h	2 🥈
24.08	50mi	14th North Country Trail Run 50 Mile	7:10:46 h	2 🥈
29.06	100mi	40th Western States 100 Mile Endurance Run	20:37:23 h	29
19.05	50km	26th Ohlone 50K Wilderness Run	5:01:15 h	2 🥈
11.05	50mi	30th Quicksilver 50 Mile Endurance Run	8:02:04 h	7
2012
13.10	50mi	30th Dick Collins Firetrails 50 Mile	8:23:33 h	20
28.09	100mi	14th The Bear 100 Mile Endurance Run	28:42:24 h	63
25.08	50mi	13th North Country Trail Run 50 Mile	7:54:44 h	3 🥉
21.07	100mi	11th Tahoe Rim Trail 100M Endurance Run	23:19:20 h	9
30.06	50km	3rd North Fork 50 km Trail Race	4:56:41 h	4
20.05	50km	25th Ohlone 50K Wilderness Run	5:28:45 h	7
21.04	50km	26th Ruth Anderson Ultra 50km	3:47:06 h	1 🏆
03.03	50km	2nd Montara Mountain 50 km Trail Run	4:27:10 h	2 🥈
07.01	50km	2nd Crystal Springs 50 km Winter Trail Run	4:31:58 h	6
2011
13.08	50km	1st Crystal Springs 50 km Summer Trail Run	4:56:57 h	4
25.06	100mi	1st Black Hills 100 Mile Run	29:17:46 h	10
12.06	50km	2nd San Lorenzo River Trail Run	4:48:41 h	1 🏆
04.06	50mi	1st Rancho Canada del Oro and Calero Park	9:30:22 h	1 🏆
22.05	50km	24th Ohlone 50K Wilderness Run	5:30:12 h	10
26.03	50km	10th Woodside Trail Run 50K	4:36:00 h	4
06.03	50km	1st Montara Mountain 50 km Trail Run	5:08:58 h	1 🏆
08.01	50km	1st Crystal Springs 50 km Winter Trail Run	4:22:08 h	2 🥈
2010
18.12	50km	6th Rodeo Beach 50km	5:10:45 h	8
11.09	50km	8th Dances with Dirt - Hell 50K Ultra	4:46:28 h	3 🥉
13.03	50km	21st Way Too Cool 50K Endurance Run	4:59:02 h	74
2009
10.10	50mi	27th Dick Collins Firetrails 50 Mile	8:18:16 h	24
08.08	50mi	3rd Headlands Hundred 50 Mile Endurance Run	8:33:36 h	9
05.07	50km	6th Pacifica 50 km Trail Run - Summer Edition	4:48:22 h	4
31.05	50km	22nd Ohlone 50K Wilderness Run	5:35:06 h	16
18.04	50km	23th Ruth Anderson Ultra 50km	3:59:37 h	4
28.03	50mi	2nd Lake Sonoma 50 Mile Race	10:10:52 h	33
2007
20.05	50km	20th Ohlone 50K Wilderness Run	5:57:57 h	24
2006
28.10	24h	1st San Francisco One Day, 24h	50.694 km	31
2005
03.12	50km	4th Woodside Trail Run 50K	5:18:46 h	6
27.08	31.5mi	8th Tamalpa Headlands 50K	5:58:46 h	75
07.08	50km	24th Skyline 50k Endurance Run	5:19:10 h	28
22.05	50km	18th Ohlone 50K Wilderness Run	5:54:39 h	11
07.05	50km	22nd Quicksilver 50 km Endurance Run	4:42:12 h	3 🥉
16.04	50km	19th Ruth Anderson Ultra 50km	4:56:50 h	7
02.04	50mi	11th Umstead Endurance Run 50 Miles	8:20:17 h	7
26.02	50km	1st Sequoia Trail Run	5:23:03 h	2 🥈
2004
09.10	50mi	22nd Dick Collins Firetrails 50 Mile	8:53:37 h	25
19.06	50km	2nd Skyline Ridge Trail Run	5:02:12 h	6

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	5/9/2014	1st Tahoe 200 Mile Endurance Run	325,09	×6
✓ 2	12/8/2016	7th Fat Dog 120 Mile Trail Race	193,12	×3
✓ 3	20/6/2025	1st Burney Mountain 100	160,93	×3
✓ 4	16/9/2023	12th Idaho Mountain Trail Ultra Festival (IMTUF 100)	160,93	×3
✓ 5	23/6/2018	45th Western States 100 Mile Endurance Run	160,93	×3
✓ 6	14/7/2017	24th Hardrock Hundred Endurance Run	160,93	×3
✓ 7	7/11/2015	15th Rio Del Lago 100 Mile Endurance Run	160,93	×3
✓ 8	11/7/2014	21st Hardrock Hundred Endurance Run	160,93	×3
✓ 9	2/11/2013	6th Pinhoti 100 Mile	160,93	×3
✓ 10	29/6/2013	40th Western States 100 Mile Endurance Run	160,93	×3
✓ 11	28/9/2012	14th The Bear 100 Mile Endurance Run	160,93	×3
✓ 12	21/7/2012	11th Tahoe Rim Trail 100M Endurance Run	160,93	×3
✓ 13	25/6/2011	1st Black Hills 100 Mile Run	160,93	×3
✓ 14	2/8/2025	24th Waldo 100K Trail Run	100,00	×1
✓ 15	14/5/2016	33rd Quicksilver 100 km Endurance Run	100,00	×1
✓ 16	3/5/2014	19th Miwok 100k Trail Race	100,00	×1
✓ 17	14/9/2013	7th Headlands Hundred 50 Mile Endurance Run	80,47	×1
✓ 18	24/8/2013	14th North Country Trail Run 50 Mile	80,47	×1
✓ 19	11/5/2013	30th Quicksilver 50 Mile Endurance Run	80,47	×1
✓ 20	13/10/2012	30th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 21	25/8/2012	13th North Country Trail Run 50 Mile	80,47	×1
✓ 22	4/6/2011	1st Rancho Canada del Oro and Calero Park	80,47	×1
✓ 23	10/10/2009	27th Dick Collins Firetrails 50 Mile	80,47	×1
✓ 24	8/8/2009	3rd Headlands Hundred 50 Mile Endurance Run	80,47	×1
✓ 25	28/3/2009	2nd Lake Sonoma 50 Mile Race	80,47	×1
✓ 26	2/4/2005	11th Umstead Endurance Run 50 Miles	80,47	×1
✓ 27	9/10/2004	22nd Dick Collins Firetrails 50 Mile	80,47	×1
✓ 28	23/2/2019	2nd Mount Umunhum Trail Run	52,00	—
✓ 29	27/8/2005	8th Tamalpa Headlands 50K	50,69	—
✓ 30	28/10/2006	1st San Francisco One Day, 24h	50,69	—
✓ 31	19/5/2019	32nd Ohlone 50K Wilderness Run	50,00	—
✓ 32	29/9/2018	5th Overlook Endurance Run 50K	50,00	—
✓ 33	3/6/2017	15th Mount Diablo 50k	50,00	—
✓ 34	18/2/2017	5th FOURmidable 50K	50,00	—
✓ 35	22/5/2016	29th Ohlone 50K Wilderness Run	50,00	—
✓ 36	10/10/2015	7th Skyline to the Sea 50km	50,00	—
✓ 37	26/9/2015	13th Dances with Dirt - Hell 50K Ultra	50,00	—
✓ 38	20/9/2015	28th Ohlone 50K Wilderness Run	50,00	—
✓ 39	16/5/2015	30th Silver State 50 km	50,00	—
✓ 40	3/8/2014	33rd Skyline 50k Endurance Run	50,00	—
✓ 41	18/5/2014	27th Ohlone 50K Wilderness Run	50,00	—
✓ 42	8/3/2014	25th Way Too Cool 50K Endurance Run	50,00	—
✓ 43	18/1/2014	3rd Pacifica Foothills Trail Run	50,00	—
✓ 44	19/5/2013	26th Ohlone 50K Wilderness Run	50,00	—
✓ 45	30/6/2012	3rd North Fork 50 km Trail Race	50,00	—
✓ 46	20/5/2012	25th Ohlone 50K Wilderness Run	50,00	—
✓ 47	21/4/2012	26th Ruth Anderson Ultra 50km	50,00	—
✓ 48	3/3/2012	2nd Montara Mountain 50 km Trail Run	50,00	—
✓ 49	7/1/2012	2nd Crystal Springs 50 km Winter Trail Run	50,00	—
✓ 50	13/8/2011	1st Crystal Springs 50 km Summer Trail Run	50,00	—
51	12/6/2011	2nd San Lorenzo River Trail Run	50,00	—
52	22/5/2011	24th Ohlone 50K Wilderness Run	50,00	—
53	26/3/2011	10th Woodside Trail Run 50K	50,00	—
54	6/3/2011	1st Montara Mountain 50 km Trail Run	50,00	—
55	8/1/2011	1st Crystal Springs 50 km Winter Trail Run	50,00	—
56	18/12/2010	6th Rodeo Beach 50km	50,00	—
57	11/9/2010	8th Dances with Dirt - Hell 50K Ultra	50,00	—
58	13/3/2010	21st Way Too Cool 50K Endurance Run	50,00	—
59	5/7/2009	6th Pacifica 50 km Trail Run - Summer Edition	50,00	—
60	31/5/2009	22nd Ohlone 50K Wilderness Run	50,00	—
61	18/4/2009	23th Ruth Anderson Ultra 50km	50,00	—
62	20/5/2007	20th Ohlone 50K Wilderness Run	50,00	—
63	3/12/2005	4th Woodside Trail Run 50K	50,00	—
64	7/8/2005	24th Skyline 50k Endurance Run	50,00	—
65	22/5/2005	18th Ohlone 50K Wilderness Run	50,00	—
66	7/5/2005	22nd Quicksilver 50 km Endurance Run	50,00	—
67	16/4/2005	19th Ruth Anderson Ultra 50km	50,00	—
68	26/2/2005	1st Sequoia Trail Run	50,00	—
69	19/6/2004	2nd Skyline Ridge Trail Run	50,00	—
70	11/7/2015	27th Knee Knackering North Shore Trail Run	48,28	—
71	30/11/2013	29th Quad Dipsea Trail Run	45,06	—