James Oliphant

Born : 1963 Cat. M60 Ultrarunner since 2010

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 Kingdom

United States

65,7%

Rank quotient ?This runner's calculation uses 83 eligible race(s): Σ(rank − 1) = 9 912; Σ finishers = 15 083. 9 912 / 15 083 × 100 = 65.72%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed83

Km — ultra races6 540 km

> 100 km15

> 160 km15

Longest race160,9 km

13th South Downs Way 100 Mile Race — 14/6/2025

Km per year (ultra races)

370

2022

456

2023

326

2024

257

2025

200

2026

Race types (share of distance)

Trail100,0%

Records

50 km5h54'39 100 km13h25'00 50 mi10h33'31 100 mi27h00'47

HISTORY

83 race(s)

Date		Race	Perf.	Rk
2026
11.07	100km	28th Siskiyou Out Back 100 km Trail Run	16:49:51 h	83
02.05	50km	31st McDonald Forest 50K Trail Run	7:03:09 h	128
11.04	50km	12th SPASM Lake Chabot 50 km	6:13:54 h	12
2025
29.11	28.4mi	40th Quad Dipsea Trail Run	7:07:10 h	172
14.06	100mi	13th South Downs Way 100 Mile Race	28:19:34 h	352
03.05	50km	30th McDonald Forest 50K Trail Run	7:36:57 h	129
2024
30.11	28mi	39th Quad Dipsea Trail Run	6:59:50 h	179
13.07	100km	26th Siskiyou Out Back 100 km Trail Run	17:51:13 h	101
08.06	50mi	11th Mary's Peak 50 Mile Ultra Trail Race	13:08:20 h	34
04.05	50km	29th McDonald Forest 50K Trail Run	7:21:28 h	118
06.04	50km	15th Diablo Trails Challenge	7:34:10 h	46
2023
25.11	28mi	38th Quad Dipsea Trail Run	7:04:04 h	215
16.09	100mi	12th Idaho Mountain Trail Ultra Festival (IMTUF 100)	34:42:12 h	92
19.08	50km	7th Backcountry Rise 50 km Race	8:46:35 h	109
08.07	50km	25th Siskiyou Out Back 50 km Trail Run	6:55:55 h	94
03.06	50km	6th Spence Mountain Run	7:39:08 h	13
06.05	50km	28th McDonald Forest 50K Trail Run	7:12:17 h	70
08.04	50km	14th Diablo Trails Challenge	7:26:54 h	46
2022
26.11	28mi	37th Quad Dipsea Trail Run	7:04:46 h	166
24.09	100mi	10th Mountain Lakes 100	27:00:47 h	76
18.06	50km	35th McKenzie River 50 km Trail Run	6:07:45 h	88
07.05	50km	27th McDonald Forest 50K Trail Run	7:54:41 h	113
10.04	40mi	20th Peterson Ridge Rumble 40 Mile Trail Run	8:52:46 h	59
2021
27.11	28mi	36th Quad Dipsea Trail Run	7:27:55 h	181
28.08	100mi	23rd Cascade Crest Classic 100 Mile	32:59:03 h	95
08.05	50km	26th McDonald Forest 50K Trail Run	7:40:41 h	165
2019
30.11	28mi	35th Quad Dipsea Trail Run	7:17:42 h	175
13.07	50mi	21st Siskiyou Out Back 50 Miles Trail Run	13:46:36 h	67
14.06	100mi	27th Bighorn Mountain Wild & Scenic 100 Mile Trail Run	34:30:14 h	171
04.05	50km	24th McDonald Forest 50K Trail Run	7:58:55 h	140
13.04	50mi	11th Lake Sonoma 50 Mile Race	13:05:53 h	238
2018
24.11	28mi	34th Quad Dipsea Trail Run	7:32:32 h	188
25.08	100mi	20th Cascade Crest Classic 100 Mile	32:59:45 h	131
12.05	50km	23rd McDonald Forest 50K Trail Run	7:22:04 h	126
14.04	50mi	10th Lake Sonoma 50 Mile Race	12:31:13 h	221
2017
17.09	50km	8th Flagline Trail Fest 50K	7:42:23 h	53
15.07	100mi	16th Tahoe Rim Trail 100M Endurance Run	34:28:46 h	144
13.05	50km	22nd McDonald Forest 50K Trail Run	7:21:01 h	158
15.04	50mi	9th Lake Sonoma 50 Mile Race	12:20:39 h	214
2016
26.11	28mi	32nd Quad Dipsea Trail Run	6:55:58 h	149
23.09	100mi	18th The Bear 100 Mile Endurance Run	33:46:04 h	121
18.09	50km	7th Flagline Trail Fest 50K	5:54:39 h	42
20.08	100km	15th Waldo 100K Trail Run	17:25:16 h	74
25.06	100mi	43rd Western States 100 Mile Endurance Run	29:19:22 h	238
14.05	50km	21st McDonald Forest 50K Trail Run	6:07:01 h	97
09.04	50mi	8th Lake Sonoma 50 Mile Race	11:01:33 h	170
06.02	50km	11th Orcas Island 50k	6:29:09 h	97
16.01	100mi	16th HURT 100 Endurance Run 100 Mile	34:18:48 h	37
2015
28.11	28mi	31st Quad Dipsea Trail Run	6:16:34 h	107
20.09	50km	6th Flagline Trail Fest 50K	6:07:01 h	50
23.08	50km	4th Squamish 50km	9:30:40 h	159
22.08	50mi	4th Squamish 50mi	14:38:10 h	138
18.07	100mi	14th Tahoe Rim Trail 100M Endurance Run	32:31:38 h	113
09.05	50km	20th McDonald Forest 50K Trail Run	6:20:19 h	98
02.05	100km	20th Miwok 100k Trail Race	13:25:00 h	135
11.04	50mi	7th Lake Sonoma 50 Mile Race	11:33:02 h	205
17.01	100mi	15th HURT 100 Endurance Run 100 Mile	35:24:50 h	56
2014
21.09	50km	5th Flagline Trail Fest 50K	7:25:00 h	116
13.09	100mi	5th Pine to Palm 100 Mile Endurance Run	31:41:25 h	115
16.08	100km	13th Waldo 100K Trail Run	15:30:51 h	82
19.07	100mi	13th Tahoe Rim Trail 100M Endurance Run	32:48:20 h	127
03.05	100km	19th Miwok 100k Trail Race	15:13:42 h	281
12.04	50mi	6th Lake Sonoma 50 Mile Race	11:14:30 h	206
2013
07.12	50mi	7th Endurance Challenge - California Trail 50 Mile	10:41:07 h	169
22.09	50km	4th Flagline Trail Fest 50K	6:32:11 h	103
14.09	100mi	4th Pine to Palm 100 Mile Endurance Run	30:16:56 h	64
17.08	100km	12th Waldo 100K Trail Run	15:10:12 h	74
27.07	50km	15th Siskiyou Out Back 50 km Trail Run	6:05:43 h	75
13.07	50mi	15th Mt. Hood 50 Mile Trail Run	10:33:31 h	82
11.05	50km	18th McDonald Forest 50K Trail Run	6:39:29 h	142
13.04	50mi	5th Lake Sonoma 50 Mile Race	12:42:10 h	242
2012
24.11	28mi	28th Quad Dipsea Trail Run	6:39:36 h	89
22.09	50km	3rd Flagline Trail Fest 50K	7:10:08 h	103
18.08	100km	11th Waldo 100K Trail Run	18:37:58 h	75
04.02	50km	7th Orcas Island 50k	7:17:44 h	101
2011
26.11	28mi	27th Quad Dipsea Trail Run	6:52:45 h	140
24.09	50km	2nd Flagline Trail Fest 50K	6:22:43 h	67
09.07	50km	13th Siskiyou Out Back 50 km Trail Run	6:16:05 h	96
14.05	50km	16th McDonald Forest 50K Trail Run	6:52:00 h	127
26.02	50km	8th Redwood Park 50K Trail Run	6:04:30 h	23
2010
18.12	50km	6th Rodeo Beach 50km	6:03:26 h	26
25.09	50km	1st Flagline Trail Fest 50K	7:04:29 h	65
08.05	50km	15th McDonald Forest 50K Trail Run	7:03:37 h	157

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	14/6/2025	13th South Downs Way 100 Mile Race	160,93	×3
✓ 2	16/9/2023	12th Idaho Mountain Trail Ultra Festival (IMTUF 100)	160,93	×3
✓ 3	24/9/2022	10th Mountain Lakes 100	160,93	×3
✓ 4	28/8/2021	23rd Cascade Crest Classic 100 Mile	160,93	×3
✓ 5	14/6/2019	27th Bighorn Mountain Wild & Scenic 100 Mile Trail Run	160,93	×3
✓ 6	25/8/2018	20th Cascade Crest Classic 100 Mile	160,93	×3
✓ 7	15/7/2017	16th Tahoe Rim Trail 100M Endurance Run	160,93	×3
✓ 8	23/9/2016	18th The Bear 100 Mile Endurance Run	160,93	×3
✓ 9	25/6/2016	43rd Western States 100 Mile Endurance Run	160,93	×3
✓ 10	16/1/2016	16th HURT 100 Endurance Run 100 Mile	160,93	×3
✓ 11	18/7/2015	14th Tahoe Rim Trail 100M Endurance Run	160,93	×3
✓ 12	17/1/2015	15th HURT 100 Endurance Run 100 Mile	160,93	×3
✓ 13	13/9/2014	5th Pine to Palm 100 Mile Endurance Run	160,93	×3
✓ 14	19/7/2014	13th Tahoe Rim Trail 100M Endurance Run	160,93	×3
✓ 15	14/9/2013	4th Pine to Palm 100 Mile Endurance Run	160,93	×3
✓ 16	11/7/2026	28th Siskiyou Out Back 100 km Trail Run	100,00	×1
✓ 17	13/7/2024	26th Siskiyou Out Back 100 km Trail Run	100,00	×1
✓ 18	20/8/2016	15th Waldo 100K Trail Run	100,00	×1
✓ 19	2/5/2015	20th Miwok 100k Trail Race	100,00	×1
✓ 20	16/8/2014	13th Waldo 100K Trail Run	100,00	×1
✓ 21	3/5/2014	19th Miwok 100k Trail Race	100,00	×1
✓ 22	17/8/2013	12th Waldo 100K Trail Run	100,00	×1
✓ 23	18/8/2012	11th Waldo 100K Trail Run	100,00	×1
✓ 24	8/6/2024	11th Mary's Peak 50 Mile Ultra Trail Race	80,47	×1
✓ 25	13/7/2019	21st Siskiyou Out Back 50 Miles Trail Run	80,47	×1
✓ 26	13/4/2019	11th Lake Sonoma 50 Mile Race	80,47	×1
✓ 27	14/4/2018	10th Lake Sonoma 50 Mile Race	80,47	×1
✓ 28	15/4/2017	9th Lake Sonoma 50 Mile Race	80,47	×1
✓ 29	9/4/2016	8th Lake Sonoma 50 Mile Race	80,47	×1
✓ 30	22/8/2015	4th Squamish 50mi	80,47	×1
✓ 31	11/4/2015	7th Lake Sonoma 50 Mile Race	80,47	×1
✓ 32	12/4/2014	6th Lake Sonoma 50 Mile Race	80,47	×1
✓ 33	7/12/2013	7th Endurance Challenge - California Trail 50 Mile	80,47	×1
✓ 34	13/7/2013	15th Mt. Hood 50 Mile Trail Run	80,47	×1
✓ 35	13/4/2013	5th Lake Sonoma 50 Mile Race	80,47	×1
✓ 36	10/4/2022	20th Peterson Ridge Rumble 40 Mile Trail Run	64,37	×1
✓ 37	2/5/2026	31st McDonald Forest 50K Trail Run	50,00	—
✓ 38	11/4/2026	12th SPASM Lake Chabot 50 km	50,00	—
✓ 39	3/5/2025	30th McDonald Forest 50K Trail Run	50,00	—
✓ 40	4/5/2024	29th McDonald Forest 50K Trail Run	50,00	—
✓ 41	6/4/2024	15th Diablo Trails Challenge	50,00	—
✓ 42	19/8/2023	7th Backcountry Rise 50 km Race	50,00	—
✓ 43	8/7/2023	25th Siskiyou Out Back 50 km Trail Run	50,00	—
✓ 44	3/6/2023	6th Spence Mountain Run	50,00	—
✓ 45	6/5/2023	28th McDonald Forest 50K Trail Run	50,00	—
✓ 46	8/4/2023	14th Diablo Trails Challenge	50,00	—
✓ 47	18/6/2022	35th McKenzie River 50 km Trail Run	50,00	—
✓ 48	7/5/2022	27th McDonald Forest 50K Trail Run	50,00	—
✓ 49	8/5/2021	26th McDonald Forest 50K Trail Run	50,00	—
✓ 50	4/5/2019	24th McDonald Forest 50K Trail Run	50,00	—
51	12/5/2018	23rd McDonald Forest 50K Trail Run	50,00	—
52	17/9/2017	8th Flagline Trail Fest 50K	50,00	—
53	13/5/2017	22nd McDonald Forest 50K Trail Run	50,00	—
54	18/9/2016	7th Flagline Trail Fest 50K	50,00	—
55	14/5/2016	21st McDonald Forest 50K Trail Run	50,00	—
56	6/2/2016	11th Orcas Island 50k	50,00	—
57	20/9/2015	6th Flagline Trail Fest 50K	50,00	—
58	23/8/2015	4th Squamish 50km	50,00	—
59	9/5/2015	20th McDonald Forest 50K Trail Run	50,00	—
60	21/9/2014	5th Flagline Trail Fest 50K	50,00	—
61	22/9/2013	4th Flagline Trail Fest 50K	50,00	—
62	27/7/2013	15th Siskiyou Out Back 50 km Trail Run	50,00	—
63	11/5/2013	18th McDonald Forest 50K Trail Run	50,00	—
64	22/9/2012	3rd Flagline Trail Fest 50K	50,00	—
65	4/2/2012	7th Orcas Island 50k	50,00	—
66	24/9/2011	2nd Flagline Trail Fest 50K	50,00	—
67	9/7/2011	13th Siskiyou Out Back 50 km Trail Run	50,00	—
68	14/5/2011	16th McDonald Forest 50K Trail Run	50,00	—
69	26/2/2011	8th Redwood Park 50K Trail Run	50,00	—
70	18/12/2010	6th Rodeo Beach 50km	50,00	—
71	25/9/2010	1st Flagline Trail Fest 50K	50,00	—
72	8/5/2010	15th McDonald Forest 50K Trail Run	50,00	—
73	29/11/2025	40th Quad Dipsea Trail Run	45,71	—
74	30/11/2024	39th Quad Dipsea Trail Run	45,06	—
75	25/11/2023	38th Quad Dipsea Trail Run	45,06	—
76	26/11/2022	37th Quad Dipsea Trail Run	45,06	—
77	27/11/2021	36th Quad Dipsea Trail Run	45,06	—
78	30/11/2019	35th Quad Dipsea Trail Run	45,06	—
79	24/11/2018	34th Quad Dipsea Trail Run	45,06	—
80	26/11/2016	32nd Quad Dipsea Trail Run	45,06	—
81	28/11/2015	31st Quad Dipsea Trail Run	45,06	—
82	24/11/2012	28th Quad Dipsea Trail Run	45,06	—
83	26/11/2011	27th Quad Dipsea Trail Run	45,06	—