Mark Henderson
ID 15049
Born : 1960 Cat. M65 Ultrarunner since 1998 USA
80
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
92
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
1
Countries visited ?USAUnited States
19,6%
Rank quotient ?This runner's calculation uses 123 eligible race(s): Σ(rank − 1) = 1 204; Σ finishers = 6 147. 1 204 / 6 147 × 100 = 19.59%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed128
Km — ultra races16 094 km
> 100 km73
> 160 km58
> 200 km11
> 24h30
> 48h14
Longest race330,8 km
1st Ultracentric 48 Hour Run — 24/11/2000

Km per year (ultra races)

1 032
6 races
2022
1 526
9 races
2023
2 584
17 races
2024
2 163
14 races
2025
542
3 races
2026

Race types (share of distance)

Road30,9%
Trail65,1%
Stage4,0%

Wins & podiums (ultra)

🏆 Win38
🏆 Win M41
🏅 Top 359
🏅 Top 3 M66
Longest winning streak7
Current streak0

Records

50 km3h51'30100 km8h09'0950 mi6h32'48100 mi17h11'4012 h104,50 km24 h168,98 km48 h330,78 km

HISTORY

124 race(s) · 1 split(s) nested
DateRacePerf.Rk
2026
24.07 48h USA6th Texas Endurance 48 Hour Endurance Runs 171.717 km3 🥉
12.06 24h USA2nd Heat Wave 6/12/24 129.200 km4
19.02 72h USA12th Jackalope Jam 72 Hour Race 241.401 km1 🏆
2025
22.11 24h USA8th Oakwood 24 106.216 km10
18.10 100mi USA15th Pumpkin Holler 100 Mile Race 30:39:40 h31
11.10 100mi USA26th Heartland 100 Mile Race 29:49:59 h30
04.10 100mi USA35th Arkansas Traveller 100 29:50:23 h107
25.07 48h USA5th Texas Endurance 48 Hour Endurance Runs 191.109 km1 🏆
11.07 48h USA14th Merrill's Mile 48 Hour Run 161.750 km38
30.05 48h USA3rd Stevi's Roost 48 Hour Ultra 209.343 km4
24.05 24h USA9th The Underground Circus 24h 128.747 km1 🏆
03.05 24h USA13th O24 - Outrun 24h Trail Run 122.608 km22
25.04 24h USA1st Cannonball Run - 24h 138.081 km2 🥈
12.04 100mi USA4th Chief Ladiga 100 25:43:36 h21
22.03 105mi USA9th Swamp Fox Ultra 105mi 32:54:19 h2 🥈
13.02 72h USA11th Jackalope Jam 72 Hour Race 225.308 km1 🏆
25.01 12h USA3rd Bleak Midwinter Endurance Run 66.787 km2 🥈
2024
19.10 100mi USA14th Pumpkin Holler 100 Mile Race 29:38:01 h37
12.10 100mi USA25th Heartland 100 Mile Race 26:22:13 h7
05.10 100mi USA34th Arkansas Traveller 100 29:03:01 h85
28.09 100mi USA4th Hell Creek 100 Mile Race 30:44:00 h4
21.09 100mi USA3rd Ultrapalooza 100mi 27:42:17 h2 🥈
26.07 48h USA4th Texas Endurance 48 Hour Endurance Runs 185.074 km4
12.06 24h USA18th KUS 24 Hour Ultramarathon 130.800 km5
08.06 24h USA13th Merrill's Mile 24 Hour Run 134.522 km5
25.05 100mi USA8th The Underground Circus 100 Mile 27:40:43 h4
18.05 24h USA4th High Lea 24 Hour Race 135.184 km2 🥈
04.05 24h USA12th O24 - Outrun 24h Trail Run 135.514 km13
27.04 100mi USA12th C&O Canal 100 Mile 28:42:09 h85
20.04 24h USA21st Virginia 24 Hour Run for Cancer 131.563 km18
13.04 100mi USA3rd Chief Ladiga 100 26:18:55 h26
23.03 24h USA2nd Run with the Knights 24 Hr Ultra 161.559 km3 🥉
16.03 24h USA4th #onemileatatime 24 Hour Challenge 121.666 km6
16.02 48h USA10th Jackalope Jam 48 Hour Race 160.934 km2 🥈
2023
28.10 100mi USA11th Kansas Rails-to-Trails Fall Extravaganza 100 Mile 27:51:23 h14
21.10 100mi USA13th Pumpkin Holler 100 Mile Race 26:03:03 h17
14.10 100mi USA24th Heartland 100 Mile Race 27:57:44 h8
09.09 100mi USA12th Pine Creek Challenge 100 Miles 23:19:00 h13
15.07 100mi USA10th Honey Badger 100 Mile Ultra Road Race 25:30:50 h4
12.05 48h USA15th 3 Days at the Fair 48 Hour Race 241.401 km1 🏆
29.04 100mi USA11th C&O Canal 100 Mile 26:49:20 h49
10.03 35h USA6th Conquer the Wall 35 Hour Endurance Challenge 158.359 km6
10.02 100mi USA5th Grandmaster Ultras 100 Mile Run 33:25:56 h8
2022
28.12 48h USA38th Across the Years, 48h 236.066 km6
12.11 8h USA1st Shelli Huether Veterans Day Honor Run 65.661 km3 🥉
08.10 100mi USA23th Heartland 100 Mile Race 25:57:03 h12
20.08 100mi USA8th Habanero Hundred 100 Mile 25:24:20 h11
09.07 100mi USA9th Honey Badger 100 Mile Ultra Road Race 23:49:27 h4
13.05 48h USA14th 3 Days at the Fair 48 Hour Race 247.838 km2 🥈
2021
12.11 24h USA15th KUS 24 Hour Ultramarathon 141.944 km5
08.10 100mi USA22th Heartland 100 Mile Race 26:42:46 h4
2014
06.12 24h USA6th 24h Run Like The Wind Ultra Distance Race 150.006 km1 🏆
19.07 60km USA8th Capt'n Karl's Trail Series - Muleshoe Bend 9:44:29 h41
15.02 50mi USA33rd Cross Timbers Trail Run 11:05:14 h14
2012
29.09 8h USA4th 8 Hour Run from the Ducks Ultra-marathon 84.088 km1 🏆
2011
24.09 8h USA3rd 8 Hour Run from the Ducks Ultra-marathon 85.166 km2 🥈
27.08 60km USA5th Capt'n Karl's Trail Series - Muleshoe Bend 8:32:00 h25
02.04 50mi USA11th Hells Hills 50 Mile Race 8:32:46 h7
19.03 50mi USA12th Grasslands 50 Mile Trail Run 7:53:00 h2 🥈
26.02 50km USA4th The Cowtown Marathon 4:28:52 h19
2010
18.04 100km USA21st Palouse 100K Relay And Solo 9:40:00 h1 🏆
2009
23.05 50mi USA1st Pocatello 50 Mile Trail Run 11:58:00 h25
19.04 100km USA20th Palouse 100K Relay And Solo 9:59:32 h1 🏆
07.03 37mi USA2nd Centennial Trail Run 6:18:16 h7
2008
05.01 100km USA8th Bandera 100 km Ultratrail 11:25:40 h3 🥉
2007
17.11 50mi USA3rd Wild Hare 50 Mile Race 6:58:02 h1 🏆
13.10 100mi USA8th Heartland 100 Mile Race 17:37:15 h2 🥈
25.08 100mi USA3rd Lean Horse Ultra-Marathon 100 Mile 18:06:00 h4
14.07 50mi USA3rd Devils Backbone 50 Miler 18:52:00 h22
2006
18.11 50mi USA2nd Wild Hare 50 Mile Race 6:59:51 h1 🏆
14.10 100mi USA7th Heartland 100 Mile Race 18:50:23 h1 🏆
28.05 50mi USA12th Wickham Park 50 Mile Fun Run 9:21:11 h1 🏆
06.05 50km USA4th Prickly Pear 50 km Trail Run 4:57:28 h2 🥈
30.04 50km USA6th Hells Hills 50km Race 4:29:48 h4
22.04 50km USA20th Ruth Anderson Ultra 50mi - 50km Split 3:41:30 h1 🏆
22.04 50mi USA20th Ruth Anderson Ultra 50mi 6:32:48 h2 🥈
25.02 100km USA5th Houston Ultra Event Weekend 100km 8:09:09 h2 🥈
2005
03.12 50mi USA16th Sunmart Texas Trails 50 Mile 6:48:04 h3 🥉
25.11 48h USA5th Ultracentric 48 Hour Run 219.337 km1 🏆
19.11 44mi USA1st Wild Hare 44 Mile Race 6:27:00 h1 🏆
05.11 50km USA10th Rockledge Rumble Trail Run 4:18:46 h1 🏆
22.10 50km USA13th Rocky 50 km Trail Run 3:51:30 h1 🏆
08.10 100mi USA6th Heartland 100 Mile Race 17:14:53 h1 🏆
17.09 50mi USA11th Bohemian Alps 50 Miles 6:54:00 h1 🏆
03.09 12h USA3rd Across the Years 12-Hour Trial Night Run 104.500 km1 🏆
27.08 100mi USA1st Lean Horse Ultra-Marathon 100 Mile 19:26:12 h6
30.04 100km USA10th Miwok 100k Trail race 10:07:32 h22
02.04 50km USA13th Hog's Hunt 50K Trail Run 3:54:13 h1 🏆
26.03 50mi USA6th Grasslands 50 Mile Trail Run 8:33:58 h1 🏆
19.02 50mi USA24th Cross Timbers Trail Run 7:53:56 h1 🏆
2004
04.12 50mi USA15th Sunmart Texas Trails 50 Mile 7:12:55 h7
06.11 24h USA6th San Diego One Day 24-Hour Race 168.981 km17
09.10 100mi USA5th Heartland 100 Mile Race 20:19:05 h1 🏆
30.05 50mi USA10th Wickham Park 50 Mile Fun Run 8:55:40 h1 🏆
03.04 50km USA12th Hog's Hunt 50K Trail Run 3:59:35 h1 🏆
2003
06.12 50mi USA14th Sunmart Texas Trails 50 Mile 8:13:00 h35
25.10 50km USA11th Rocky 50 km Trail Run 4:16:53 h6
11.10 100mi USA4th Heartland 100 Mile Race 18:41:03 h1 🏆
2002
12.10 100mi USA3rd Heartland 100 Mile Race 17:52:00 h2 🥈
21.09 50mi USA8th Bohemian Alps 50 Miles 7:51:10 h1 🏆
27.04 50km USA2nd Hells Hills 50km Race 4:57:58 h4
02.02 100mi USA10th Rocky Raccoon 100 Mile Trail Run 19:15:16 h15
2001
01.12 50mi USA12th Sunmart Texas Trails 50 Mile 6:59:55 h9
13.10 100mi USA2nd Heartland 100 Mile Race 17:17:50 h1 🏆
04.08 8h USA0st Hot to Trot 8 Hours Run 70.923 km1 🏆
25.07 135mi USA15th Badwater Ultramarathon 41:22:40 h15
27.05 50mi USA7th Wickham Park 50 Mile Fun Run 10:20:15 h1 🏆
27.05 100mi/2stages USA7th Wickham Park 100 Mile Fun Run 21:08:59 h1 🏆
27.05 200mi/4stages USA7th Wickham Park 200 Mile Fun Run 43:48:39 h1 🏆
28.04 50mi USA12th Zane Grey Highline Trail 50 Mile 11:57:18 h17
17.03 50mi USA20th Cross Timbers Trail Run 8:32:42 h1 🏆
03.02 100mi USA9th Rocky Raccoon 100 Mile Trail Run 17:11:40 h5
2000
02.12 50mi USA11th Sunmart Texas Trails 50 Mile 7:24:42 h14
24.11 48h USA1st Ultracentric 48 Hour Run 330.784 km1 🏆
14.10 100mi USA1st Heartland 100 Mile Race 20:51:24 h2 🥈
28.05 50mi USA6th Wickham Park 50 Mile Fun Run 10:42:59 h1 🏆
28.05 100mi/2stages USA6th Wickham Park 100 Mile Fun Run 22:19:27 h1 🏆
17.03 50mi USA19th Cross Timbers Trail Run 8:32:42 h1 🏆
05.02 100mi USA8th Rocky Raccoon 100 Mile Trail Run 21:10:20 h25
1999
04.12 50mi USA10th Sunmart Texas Trails 50 Mile 8:17:18 h59
10.11 48h USA1st Texas A&M University 48hr Run 258.895 km2 🥈
02.10 100mi USA9th Arkansas Traveller 100 25:53:38 h39
05.06 40mi USAPennar 40-Miler 5:48:04 h6
1998
12.12 50mi USA9th Sunmart Texas Trails 50 Mile 8:14:25 h46