Mark Dorion
ID 15090
Born : 1959 Cat. M65 Ultrarunner since 1979 USA
60
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
105
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
4
Countries visited ?BELBelgiumCANCanadaGBRUnited KingdomUSAUnited States
26,8%
Rank quotient ?This runner's calculation uses 78 eligible race(s): Σ(rank − 1) = 844; Σ finishers = 3 145. 844 / 3 145 × 100 = 26.84%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed78
Km — ultra races16 215 km
> 100 km35
> 160 km30
> 200 km23
> 24h30
> 48h17
Longest race875,5 km
16th Sri Chinmoy 10 Day Race — 18/4/2011

Km per year (ultra races)

285
1 race
2022
95
2 races
2023
1 150
3 races
2024
212
1 race
2025
503
1 race
2026

Race types (share of distance)

Road91,6%
Trail7,0%
Elim.0,5%
?0,9%

Wins & podiums (ultra)

🏆 Win11
🏆 Win M12
🏅 Top 320
🏅 Top 3 M25
Longest winning streak2
Current streak1

Records

50 km3h09'25100 km7h36'3750 mi6h14'47100 mi17h05'406 h45,16 km12 h107,22 km24 h211,39 km48 h232,84 km6 d638,91 kmBackyard11 loops

HISTORY

86 race(s) · 35 split(s) nested
DateRacePerf.Rk
2026
22.04 6d USA28th Sri Chinmoy 6 Day Race New York 503.080 km1 🏆
2025
28.12 48h USA41st Across the Years, 48h 212.433 km8
2024
28.12 72h USA41th Across the Years, 72h 260.705 km14
25.05 13h USA13th Sri Chinmoy 13 Hour Race 69.394 km11
17.04 10d USA26th Sri Chinmoy 10 Day Race 819.635 km11
2023
10.12 50km USA2nd Tucson 50K 6:33:22 h63
19.11 6h USA1st Sri Chinmoy 6-Hour Race - San Diego 45.158 km20
2022
28.12 72h USA38th Across the Years, 72h 284.966 km11
2021
12.06 24h USA1st Sri Chinmoy 24 Hour Race Rockland Lake 137.558 km7
2019
18.11 6d USA7th Icarus Florida 6 Day UltraFest 516.921 km3 🥉
27.09 48h USABeebe Farm 48-Hour Run 232.839 km5
18.05 13h USA8th Sri Chinmoy 13 Hour Race 84.265 km5
16.03 24h USA3rd Lhotse 24-Hour Endurance Challenge 138.000 km6
2017
21.04 6d USA20th Sri Chinmoy 6 Day Race 548.786 km9
25.02 24h USA2nd Riverbank One Day - 24hrs run 145.200 km16
2016
23.04 6d USA19th Sri Chinmoy 6 Day Race 532.692 km10
2015
23.04 6d USA18th Sri Chinmoy 6 Day Race 548.786 km13
10.01 50km USA15th Bandera 50 km Ultratrail 7:18:03 h79
2014
27.09 24h CAN33rd Self-Transcendence 24 Hour Race Ottawa 146.819 km16
2013
29.12 72h USA29th Across the Years, 72h 284.678 km11
28.09 12h CAN32nd Self-Transcendence 12 Hour Race Ottawa 94.200 km4
17.04 10d USA18th Sri Chinmoy 10 Day Race 832.030 km17
2012
29.12 72h USA29th Across the Years, 72h 325.229 km10
2011
03.12 9h USASagebrush Shuffle 9 Hour Run 61.155 km3 🥉
18.04 10d USA16th Sri Chinmoy 10 Day Race 875.483 km16
2010
23.10 Backyard Ultra USA1st Lazarus' Backyard Ultra 75.639 km5
19.04 10d USA15th Sri Chinmoy 10 Day Race 841.686 km15
31.01 12h USA1st Tumbleweed Trek 89.479 km1 🏆
2009
26.04 24h USA12th Sri Chinmoy 6 Day Race - 24h Split 140.013 km4
26.04 48h USA12th Sri Chinmoy 6 Day Race - 48h Split 228.527 km6
26.04 6d USA12th Sri Chinmoy 6 Day Race 568.098 km7
17.01 38.5mi USA4th The Ghost Town 38.5 7:13:40 h22
2008
27.04 48h USA11th Sri Chinmoy 6 Day Race - 48h Split 185.074 km7
27.04 6d USA11th Sri Chinmoy 6 Day Race 513.380 km7
2007
24.11 28mi USA23rd Quad Dipsea Trail Run 5:24:38 h37
29.04 48h USA10th Sri Chinmoy 6 Day Race - 48h Split 241.402 km6
29.04 24h USA10th Sri Chinmoy 6 Day Race - 24h Split 162.544 km5
29.04 6d USA10th Sri Chinmoy 6 Day Race 638.910 km5
2006
30.12 48h USA24th Across the Years, 48h 222.000 km8
18.11 24h USA6th Ultracentric 24 Hour Run 180.375 km18
26.08 31.5mi USA9th Tamalpa Headlands 50K 5:19:59 h40
30.04 48h USA9th Sri Chinmoy 6 Day Race - 48h Split 236.573 km5
30.04 6d USA9th Sri Chinmoy 6 Day Race 616.378 km5
2005
10.09 100mi USA15th Olander Park 24 Hour Run - 100mi Split 22:36:02 h24
10.09 24h USA15th Olander Park 24 Hour Run 160.934 km24
02.07 50mi USA17th Finger Lakes Fifties 50 Mile Run 11:36:31 h12
01.05 48h USA8th Sri Chinmoy 6 Day Race - 48h Split 194.730 km13
01.05 6d USA8th Sri Chinmoy 6 Day Race 511.771 km12
2004
13.11 50mi USA1st Monster Mine Run 50Miles 12:40:02 h1 🏆
09.10 50mi USA22nd Dick Collins Firetrails 50 Mile 9:42:08 h49
2003
04.01 50km USARed Rock Fat Ass 50K 6:22:00 h5
2002
27.07 50mi USA21st Minnesota Voyageur Trail 50 Mile Ultra 10:55:03 h38
1999
30.05 50mi USA5th Wickham Park 50 Mile Fun Run 11:57:03 h5
1996
16.06 12h GBRTowneley 12 Hour Race 107.216 km4
21.04 50mi USA22th Lake Waramaug 50mi Ultra Marathon 7:45:49 h5
1989
28.10 50km USA7th Edmund Fitzgerald 50K Road Race 3:40:03 h11
1988
17.06 100km BEL9. Nacht van Vlaanderen, 100km Torhout 8:50:42 h53
03.06 24h CAN8th Self-Transcendence 24 Hour Race Ottawa 197.999 km2 🥈
1987
30.05 24h CAN7th Self-Transcendence 24 Hour Race Ottawa 210.970 km2 🥈
09.05 50mi USA4th Quicksilver 50 Mile Endurance Run 8:40:21 h13
1986
13.12 50km USA5th Tallahassee Ultra Distance Classic 50K 3:09:25 h1 🏆
25.10 100km USA5th Edmund Fitzgerald Memorial 100K Road Race 7:36:37 h5
26.07 50mi USA5th Minnesota Voyageur Trail 50 Mile Ultra 9:09:46 h15
1985
14.12 100km USA4th Tallahassee Ultra Distance Classic 100K 8:13:09 h4
1984
23.11 24h USANick Marshall Track Run 196.061 km6
01.09 24h USA4th The Last Annual Rowdy Ultimate 24 Hour Track Race 92.537 km16
29.04 50mi USA11th Lake Waramaug 50mi Ultra Marathon 6:14:47 h5
03.03 100mi USASouth Carolina 100 Mile Run 17:05:40 h1 🏆
03.03 24h USASouth Carolina 24 Hour Run 211.394 km1 🏆
1983
11.12 50km USAFour-in-One 50 km Track Run 4:02:58 h4
11.12 50mi USAFour-in-One 50 Mile Track Run 6:43:11 h1 🏆
11.12 100km USAFour-in-One 100 km Track Run 8:54:07 h1 🏆
04.12 50mi USASan Antonio 50 Mile 6:18:00 h2 🥈
27.11 50km USAFive-in-One 50 km Track Run 4:04:35 h4
27.11 50mi USAFive-in-One 50 Mile Track Run 6:37:12 h2 🥈
27.11 100km USAFive-in-One 100 km Track Run 8:21:36 h1 🏆
19.03 24h USATrinity 24 Hour 176.988 km1 🏆
27.02 28.5mi USATanque Verde Loop 5:05:34 h8
1982
12.12 50km USAFour-in-One 50 km Track Run 3:55:55 h2 🥈
12.12 50mi USAFour-in-One 50 Mile Track Run 6:48:42 h2 🥈
12.12 100km USAFour-in-One 100 km Track Run 8:45:19 h1 🏆
02.05 50mi USA9th Lake Waramaug 50mi Ultra Marathon 6:23:54 h19
02.05 100km USA9th Lake Waramaug 100km Ultra Marathon 8:05:57 h4
24.04 50km USA4th Sybil Ludington 50 km Run 3:28:51 h3 🥉
1981
06.06 24h USALittle Rhody 24 Hour Track Run 181.770 km8
1979
13.10 50mi USANational AAU 50 Mile Championships 7:01:41 h30