Steven Maas

Born : 1959 Cat. M65 Ultrarunner since 2000

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

Slovenia

United States

80,8%

Rank quotient ?This runner's calculation uses 93 eligible race(s): Σ(rank − 1) = 8 753; Σ finishers = 10 838. 8 753 / 10 838 × 100 = 80.76%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed93

Km — ultra races5 716 km

> 100 km5

> 160 km2

> 24h3

Longest race160,9 km

14th Vermont 100 Mile Endurance Race — 20/7/2002

Km per year (ultra races)

150

2022

100

2023

100

2024

100

2025

2026

Race types (share of distance)

Road17,5%

Trail82,5%

Records

50 km4h48'15 100 km18h59'41 50 mi9h57'04 100 mi26h29'34 6 h45,06 km 12 h77,25 km 24 h126,03 km

HISTORY

94 race(s)

Date		Race	Perf.	Rk
2025
30.05	50km	15th Yankee Springs 50 km Trail Run	8:55:20 h	42
26.04	50km	12th The Canyons Endurance 50 km Run	11:39:02 h	599
2024
25.05	50km	6th The Riley Trails 50k	8:37:51 h	14
09.03	50km	15th Mesquite Canyon 50 km	10:49:08 h	70
2023
29.04	50.1km	10th The Canyons Endurance 50 km Run	9:44:02 h	424
25.02	50km	4th Copper Corridor 50km Race	8:58:17 h	131
2022
17.12	50km	8th Bootlegger 50K	9:28:58 h	21
23.04	50km	4th The Riley Trails 50k	8:30:11 h	30
05.02	50km	10th Elephant Mountain 50 km	10:01:36 h	74
2021
30.10	51km	Ultra Trail Vipava Valley 50 Gladiator	12:59:12 h	209
25.09	50km	12th The Bear Chase 50 km	9:12:57 h	82
29.05	50km	1st Pinal Peak 50km Trail Run	10:32:17 h	93
27.03	50km	8th Behind the Rocks 50km Race	9:58:09 h	204
2020
19.12	50km	11th Cave Creek Thriller 50K Race	8:51:15 h	66
31.10	100km	18th Javelina Jundred 100 km Endurance Run	18:59:41 h	64
09.08	50km	7th Marlette Lake Tahoe 50K	8:40:03 h	62
30.05	50km	8th Bryce 50 km Trail Run	11:19:05 h	61
04.01	50km	10th San Tan Scramble 50K	8:44:59 h	62
2019
16.11	50km	10th Pass Mountain 50 km Race	8:49:00 h	59
07.09	50km	3rd Mountain RATS Trail 50k	11:02:44 h	32
13.07	50km	8th Dirty Burg 50K Trail Run	8:08:25 h	31
18.05	50km	7th Insomniac Night Trail Run Series - Adrenaline 50k	8:33:10 h	37
13.04	50km	1st The Riley Trails 50k	7:34:29 h	29
30.03	50km	27th Crown King Scramble 50K	9:26:32 h	204
12.01	50km	39th Avalon Benefit 50 km Run	8:08:29 h	180
2018
27.10	6h	7th Bad Apple Ultra - 6 hour	45.061 km	22
11.08	55km	4th Skyline Mountain Marathon 55K	11:25:45 h	45
14.07	50km	7th Dirty Burg 50K Trail Run	7:56:25 h	33
02.06	52.4mi	8th Yankee Springs 52 Mile Trail Run	15:27:15 h	20
14.04	50km	15th Desert Rats Trail Running Festival 50 km	9:20:46 h	129
06.01	50km	8th San Tan Scramble 50K	8:28:53 h	55
2017
11.11	50mi	4th Tunnel Hill 50 Mile Race	13:35:54 h	286
28.10	12h	7th Bad Apple Ultra - 12 hour	51.499 km	41
09.09	50km	8th Javelina Jangover Night Run 50K	8:50:22 h	56
15.07	50km	6th Dirty Burg 50K Trail Run	7:36:59 h	42
18.03	50km	4th Badwater Cape Fear 50 km	8:17:00 h	70
2016
12.11	50mi	3rd Tunnel Hill 50 Mile Race	13:57:22 h	292
24.09	50mi	4th Hungerford Trail Race 50 Mile	13:40:47 h	19
16.07	50km	5th Dirty Burg 50K Trail Run	7:49:08 h	38
14.05	54km	4th Insomniac Night Trail Run Series - Adrenaline 54k	8:57:23 h	34
02.04	50km	3rd Behind the Rocks 50km Race	10:22:57 h	102
23.01	52km	6th Coldwater Rumble 52K Race	9:40:21 h	45
2015
14.11	50mi	2nd Tunnel Hill 50 Mile Race	13:07:58 h	211
24.10	12h	5th Bad Apple Ultra - 12 hour	51.499 km	29
22.08	50km	7th Devil Mountain Ultra 50 km	10:26:43 h	54
11.07	50km	4th Dirty Burg 50K Trail Run	8:13:11 h	27
10.04	50km	4th The Zion 50 km Run	9:12:23 h	107
21.02	50mi	4th Everglades 50 Mile Ultra Run	13:23:24 h	62
10.01	50km	5th San Tan Scramble 50K	8:19:29 h	47
2014
25.10	12h	4th Bad Apple Ultra - 12 hour	77.248 km	23
12.07	50km	3th Dirty Burg 50K Trail Run	7:52:10 h	37
2013
09.11	50mi	1st Hungerford Trail Race 50 Mile	12:31:31 h	20
26.10	6h	3rd Bad Apple Ultra - 6 hour	45.061 km	13
15.06	50km	1st Striders Swan Creek	7:16:35 h	33
05.01	50km	3rd Yankee Springs 50 km Winter Challenge	8:29:00 h	56
2012
08.12	50km	3rd McDowell Mountain Frenzy 50 km	8:19:28 h	65
2009
11.10	50km	23rd Glacial Trail 50 km Race	8:11:30 h	60
2008
09.02	50km	10th Pemberton Trail 50 km	7:16:50 h	85
2007
07.07	50km	13th Rattlesnake Trail 50K Ultrarun	8:23:04 h	113
28.04	50km	7th Promise Land 50K++	9:29:26 h	254
13.01	50km	7th Bandera 50 km Ultratrail	7:28:14 h	51
2006
29.07	50mi	8th Mt. Hood 50 Mile Trail Run	11:40:17 h	89
12.02	50km	1st Manasota Track Club 50K	6:24:59 h	23
2005
12.11	24h	7th San Diego One Day 24-Hour Race	101.549 km	63
03.09	12h	1st Flatlanders 12 Hour Run	56.327 km	22
09.04	50mi	13th Bull Run Run 50 Miler	12:42:14 h	261
12.03	60km	2nd Land Between The Lakes 60 km Trail Run	8:10:19 h	27
12.02	50km	10th Holiday Lake 50K++	7:21:08 h	141
08.01	50km	5th Bandera 50 km Ultratrail	9:25:30 h	90
2004
18.12	50km	8th Huff 50K Trail Run	7:03:02 h	194
20.11	50mi	42nd JFK 50 Mile	12:21:03 h	728
05.09	50km	2nd Great Eastern Endurance Run 50 km	7:58:50 h	40
10.07	50km	10th Rattlesnake Trail 50K Ultrarun	7:42:15 h	66
08.05	50mi	23th Ice Age Trail 50 Mile Run	11:24:15 h	201
13.03	60km	1st Land Between The Lakes 60 km Trail Run	8:24:38 h	37
07.02	50mi	12th Rocky Raccoon 50 Mile Trail Run	10:17:50 h	23
2003
20.09	50mi	4th North Country Trail Run 50 Mile	9:57:04 h	25
01.03	24h	2nd Houston Ultra Event Weekend 24h	126.028 km	8
2002
30.11	24h	3rd Ultracentric 24 Hour Run	105.190 km	16
21.09	50mi	3rd North Country Trail Run 50 Mile	11:23:46 h	34
20.07	100mi	14th Vermont 100 Mile Endurance Race	26:29:34 h	132
06.04	50mi	8th Umstead Endurance Run 50 Miles	11:17:29 h	55
16.03	50km	16th Crown King Scramble 50K	7:35:35 h	127
2001
01.12	50mi	12th Sunmart Texas Trails 50 Mile	10:32:09 h	139
06.10	100mi	11th Arkansas Traveller 100	29:24:37 h	78
16.09	50km	4th Pisgah Mountain Trail Race	6:49:44 h	53
10.05	50mi	20th Ice Age Trail 50 Mile Run	10:02:32 h	146
28.04	50km	1st Promise Land 50K++	8:52:05 h	123
07.04	50km	2nd Chicago Lakefront Spring 50km Race	4:48:15 h	39
17.03	50km	15th Crown King Scramble 50K	7:17:25 h	110
2000
02.12	50km	11th Sunmart Texas Trails 50 km	5:11:23 h	147
23.09	50mi	1st North Country Trail Run 50 Mile	10:04:45 h	20
27.05	50km	8th Sulphur Springs Trail Run 50km	5:38:58 h	33
25.03	50km	7th GNC 100 km Run Challenge - 50km Split	5:23:42 h	71

Filter

Runner	Races in common

DUV-index calculation details

#	Date	Race	Credited km	DUV-index+
✓ 1	20/7/2002	14th Vermont 100 Mile Endurance Race	160,93	×3
✓ 2	6/10/2001	11th Arkansas Traveller 100	160,93	×3
✓ 3	1/3/2003	2nd Houston Ultra Event Weekend 24h	126,03	×2
✓ 4	30/11/2002	3rd Ultracentric 24 Hour Run	105,19	×2
✓ 5	12/11/2005	7th San Diego One Day 24-Hour Race	101,55	×2
✓ 6	31/10/2020	18th Javelina Jundred 100 km Endurance Run	100,00	×2
✓ 7	2/6/2018	8th Yankee Springs 52 Mile Trail Run	84,33	×1
✓ 8	11/11/2017	4th Tunnel Hill 50 Mile Race	80,47	×1
✓ 9	12/11/2016	3rd Tunnel Hill 50 Mile Race	80,47	×1
✓ 10	24/9/2016	4th Hungerford Trail Race 50 Mile	80,47	×1
✓ 11	14/11/2015	2nd Tunnel Hill 50 Mile Race	80,47	×1
✓ 12	21/2/2015	4th Everglades 50 Mile Ultra Run	80,47	×1
✓ 13	9/11/2013	1st Hungerford Trail Race 50 Mile	80,47	×1
✓ 14	29/7/2006	8th Mt. Hood 50 Mile Trail Run	80,47	×1
✓ 15	9/4/2005	13th Bull Run Run 50 Miler	80,47	×1
✓ 16	20/11/2004	42nd JFK 50 Mile	80,47	×1
✓ 17	8/5/2004	23th Ice Age Trail 50 Mile Run	80,47	×1
✓ 18	7/2/2004	12th Rocky Raccoon 50 Mile Trail Run	80,47	×1
✓ 19	20/9/2003	4th North Country Trail Run 50 Mile	80,47	×1
✓ 20	21/9/2002	3rd North Country Trail Run 50 Mile	80,47	×1
✓ 21	6/4/2002	8th Umstead Endurance Run 50 Miles	80,47	×1
✓ 22	1/12/2001	12th Sunmart Texas Trails 50 Mile	80,47	×1
✓ 23	10/5/2001	20th Ice Age Trail 50 Mile Run	80,47	×1
✓ 24	23/9/2000	1st North Country Trail Run 50 Mile	80,47	×1
✓ 25	25/10/2014	4th Bad Apple Ultra - 12 hour	77,25	×1
✓ 26	12/3/2005	2nd Land Between The Lakes 60 km Trail Run	60,00	×1
✓ 27	13/3/2004	1st Land Between The Lakes 60 km Trail Run	60,00	×1
✓ 28	3/9/2005	1st Flatlanders 12 Hour Run	56,33	×1
✓ 29	11/8/2018	4th Skyline Mountain Marathon 55K	55,00	×1
✓ 30	14/5/2016	4th Insomniac Night Trail Run Series - Adrenaline 54k	54,00	×1
✓ 31	23/1/2016	6th Coldwater Rumble 52K Race	52,00	×1
✓ 32	28/10/2017	7th Bad Apple Ultra - 12 hour	51,50	×1
✓ 33	24/10/2015	5th Bad Apple Ultra - 12 hour	51,50	×1
✓ 34	30/10/2021	Ultra Trail Vipava Valley 50 Gladiator	51,00	×1
✓ 35	29/4/2023	10th The Canyons Endurance 50 km Run	50,10	×1
✓ 36	30/5/2025	15th Yankee Springs 50 km Trail Run	50,00	×1
✓ 37	26/4/2025	12th The Canyons Endurance 50 km Run	50,00	×1
✓ 38	25/5/2024	6th The Riley Trails 50k	50,00	×1
✓ 39	9/3/2024	15th Mesquite Canyon 50 km	50,00	×1
✓ 40	25/2/2023	4th Copper Corridor 50km Race	50,00	×1
✓ 41	17/12/2022	8th Bootlegger 50K	50,00	×1
✓ 42	23/4/2022	4th The Riley Trails 50k	50,00	×1
✓ 43	5/2/2022	10th Elephant Mountain 50 km	50,00	×1
✓ 44	25/9/2021	12th The Bear Chase 50 km	50,00	×1
✓ 45	29/5/2021	1st Pinal Peak 50km Trail Run	50,00	×1
✓ 46	27/3/2021	8th Behind the Rocks 50km Race	50,00	×1
✓ 47	19/12/2020	11th Cave Creek Thriller 50K Race	50,00	×1
✓ 48	9/8/2020	7th Marlette Lake Tahoe 50K	50,00	×1
✓ 49	30/5/2020	8th Bryce 50 km Trail Run	50,00	×1
✓ 50	4/1/2020	10th San Tan Scramble 50K	50,00	×1
51	16/11/2019	10th Pass Mountain 50 km Race	50,00	×1
52	7/9/2019	3rd Mountain RATS Trail 50k	50,00	×1
53	13/7/2019	8th Dirty Burg 50K Trail Run	50,00	×1
54	18/5/2019	7th Insomniac Night Trail Run Series - Adrenaline 50k	50,00	×1
55	13/4/2019	1st The Riley Trails 50k	50,00	×1
56	30/3/2019	27th Crown King Scramble 50K	50,00	×1
57	12/1/2019	39th Avalon Benefit 50 km Run	50,00	×1
58	14/7/2018	7th Dirty Burg 50K Trail Run	50,00	×1
59	14/4/2018	15th Desert Rats Trail Running Festival 50 km	50,00	×1
60	6/1/2018	8th San Tan Scramble 50K	50,00	×1
61	9/9/2017	8th Javelina Jangover Night Run 50K	50,00	×1
62	15/7/2017	6th Dirty Burg 50K Trail Run	50,00	×1
63	18/3/2017	4th Badwater Cape Fear 50 km	50,00	×1
64	16/7/2016	5th Dirty Burg 50K Trail Run	50,00	×1
65	2/4/2016	3rd Behind the Rocks 50km Race	50,00	×1
66	22/8/2015	7th Devil Mountain Ultra 50 km	50,00	×1
67	11/7/2015	4th Dirty Burg 50K Trail Run	50,00	×1
68	10/4/2015	4th The Zion 50 km Run	50,00	×1
69	10/1/2015	5th San Tan Scramble 50K	50,00	×1
70	12/7/2014	3th Dirty Burg 50K Trail Run	50,00	×1
71	15/6/2013	1st Striders Swan Creek	50,00	×1
72	5/1/2013	3rd Yankee Springs 50 km Winter Challenge	50,00	×1
73	8/12/2012	3rd McDowell Mountain Frenzy 50 km	50,00	×1
74	11/10/2009	23rd Glacial Trail 50 km Race	50,00	×1
75	9/2/2008	10th Pemberton Trail 50 km	50,00	×1
76	7/7/2007	13th Rattlesnake Trail 50K Ultrarun	50,00	×1
77	28/4/2007	7th Promise Land 50K++	50,00	×1
78	13/1/2007	7th Bandera 50 km Ultratrail	50,00	×1
79	12/2/2006	1st Manasota Track Club 50K	50,00	×1
80	12/2/2005	10th Holiday Lake 50K++	50,00	×1
81	8/1/2005	5th Bandera 50 km Ultratrail	50,00	×1
82	18/12/2004	8th Huff 50K Trail Run	50,00	×1
83	5/9/2004	2nd Great Eastern Endurance Run 50 km	50,00	×1
84	10/7/2004	10th Rattlesnake Trail 50K Ultrarun	50,00	×1
85	16/3/2002	16th Crown King Scramble 50K	50,00	×1
86	16/9/2001	4th Pisgah Mountain Trail Race	50,00	×1
87	28/4/2001	1st Promise Land 50K++	50,00	×1
88	7/4/2001	2nd Chicago Lakefront Spring 50km Race	50,00	×1
89	17/3/2001	15th Crown King Scramble 50K	50,00	×1
90	2/12/2000	11th Sunmart Texas Trails 50 km	50,00	×1
91	27/5/2000	8th Sulphur Springs Trail Run 50km	50,00	×1
92	27/10/2018	7th Bad Apple Ultra - 6 hour	45,06	—
93	26/10/2013	3rd Bad Apple Ultra - 6 hour	45,06	—