Nancy Marks
Born : 1960 Cat. W65 Ultrarunner since 2011 USA
83
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
84
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
74,7%
Rank quotient ?This runner's calculation uses 186 eligible race(s): Σ(rank − 1) = 8 085; Σ finishers = 10 821. 8 085 / 10 821 × 100 = 74.72%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed186
Km — ultra races17 259 km
> 100 km35
> 160 km29
> 200 km4
Longest race563,3 km

Km per year (ultra races)

1 538
16 races
2022
1 578
17 races
2023
1 741
15 races
2024
1 635
15 races
2025
589
7 races
2026

Race types (share of distance)

Road3,5%
Trail96,5%

Wins & podiums (ultra)

🏆 Win2
🏆 Win F13
🏅 Top 33
🏅 Top 3 F52
Longest winning streak1
Current streak0

HISTORY

186 race(s)
DateRacePerf.Rk
2026
27.06 60km USA20th Capt'n Karl's Trail Series - Muleshoe Bend 11:31:46 h21
06.06 60km USA20th Capt'n Karl's Trail Series - Pedernales Falls 11:57:58 h14
02.05 100km USA1st Rise Sasquatch Shuffle 18:37:08 h15
18.04 50km USA13th Toughest N’ Texas Trail Runs 50K 8:30:22 h22
28.02 50km USA2nd Horse Thief Trail Run 9:10:51 h7
14.02 100mi USA8th Outlaw 100 Oklahoma - 100 Mile Run 2d 02:22:01 h11
31.01 108km USA9th Running the Rose 108k 20:05:17 h10
2025
08.11 50km USA28th Rockledge Rumble Trail Run 8:19:35 h53
04.10 100km USA5th Dana Peak Trail Run 20:16:40 h8
27.09 100km USA2nd Conquer the Canyon Trail Race 18:25:42 h2 🥈
06.09 50km USA1st Horse Thief Trail Run 9:14:34 h10
09.08 60km USA19th Capt'n Karl's Trail Series - Reveille Peak Ranch 12:53:09 h18
19.07 60km USA19th Capt'n Karl's Trail Series - Colorado Bend 11:00:39 h16
28.06 60km USA19th Capt'n Karl's Trail Series - Muleshoe Bend 11:10:03 h24
12.06 350mi USA6th The Last Annual Heart of the South Road Race 10d 07:53:16 h30
07.06 60km USA19th Capt'n Karl's Trail Series - Pedernales Falls 11:45:05 h31
17.05 69mi USA7th Possums Revenge 69 Mile Race 21:33:34 h13
12.04 50km USA12th Toughest N’ Texas Trail Runs 50K 9:42:46 h16
08.03 50km USA1st Great Springs Trail Race - Austin 8:36:50 h29
15.02 60km USA1st Cupid's Gauntlet 12:47:39 h13
08.02 100mi USA7th Outlaw 100 Oklahoma - 100 Mile Run 46:46:08 h6
11.01 100km USA25th Bandera 100 km Endurance Run 22:46:20 h221
2024
16.11 100km USA2nd Big Texas Ultra (Qualifiers Only) 18:38:01 h9
25.10 100mi USA18th Cactus Rose 100 Mile 39:01:53 h17
12.10 50km USA2nd South Texas 50km Ultra 6:45:01 h18
05.10 100km USA4th Dana Peak Trail Run 20:40:32 h12
28.09 100km USA1st Desert Wolf 21:01:57 h6
03.08 60km USA18th Capt'n Karl's Trail Series - Colorado Bend 11:40:00 h16
11.07 500km USA19th Last Annual Vol-State 500K Endurance Run 9d 01:23:19 h58
22.06 60km USA18th Capt'n Karl's Trail Series - Pedernales Falls 9:52:47 h28
18.05 69mi USA6th Possums Revenge 69 Mile Race 22:17:39 h26
27.04 52.4mi USA9th Pandora's Box of Rox 50 Mile 15:29:40 h16
09.03 50mi USA9th J&J Race and Trail Running Reunion 50 Mile Race 15:17:54 h10
02.03 100km USA3rd Dos Senderos Trail - 100km 19:42:12 h13
24.02 52,4mi USA7th Tinajas Ultra 52 Mile 15:38:25 h9
20.01 50km USA1st Frio Trail Run 50km 7:38:43 h7
13.01 99.5km USA24th Bandera 100 km Endurance Run 18:44:53 h264
2023
02.12 55km USA10th Isle du Bois Trail Run 8:39:24 h38
18.11 100km USA1st Big Texas Ultra (Qualifiers Only) 16:59:39 h6
11.11 50km USA26th Rockledge Rumble Trail Run 7:42:50 h39
14.10 50km USA1st South Texas 50km Ultra 6:52:59 h21
07.10 100km USA3rd Dana Peak Trail Run 19:33:02 h20
17.06 50km USA2nd Fire Trail Running Festival 8:01:22 h18
10.06 50km USA1st Ricochet's Riot 8:20:06 h31
20.05 69mi USA5th Possums Revenge 69 Mile Race 20:54:00 h22
29.04 52.4mi USA8th Pandora's Box of Rox 50 Mile 13:09:45 h17
22.04 50mi USA6th Coyote 50 Mile Trail Run 15:05:24 h14
08.04 100mi USA12th The Zion 100 Mile Run 35:11:51 h123
10.03 50mi USA8th J&J Race and Trail Running Reunion 50 Mile Race 15:46:03 h15
04.03 100km USA2nd Dos Senderos Trail - 100km 20:05:15 h10
11.02 100mi USA5th Outlaw 100 Oklahoma - 100 Mile Run 43:33:30 h9
04.02 100mi USA31st Rocky Raccoon 100 Mile Trail Run 31:34:27 h239
21.01 52mi USA7th Goodwater Trail Race Double-Marathon 14:43:54 h4
07.01 100km USA23rd Bandera 100 km Endurance Run 17:25:30 h218
2022
03.12 52,4mi USA6th Tinajas Ultra 52 Mile 14:50:14 h8
06.11 50km USA7th The Hill Country Trivium 7:14:31 h22
29.10 100mi USA3rd Lake Murray 100 Mile Endurance Run 30:18:01 h13
08.10 100km USA2nd Dana Peak Trail Run 18:38:48 h8
17.09 50km USA9th The Barkley Fall Classic 12:38:44 h56
27.08 60km USA16th Capt'n Karl's Trail Series - Reveille Peak Ranch 11:02:56 h33
06.08 60km USA16th Capt'n Karl's Trail Series - Colorado Bend 10:16:02 h17
16.07 60km USA16th Capt'n Karl's Trail Series - Muleshoe Bend 10:33:34 h21
25.06 60km USA16th Capt'n Karl's Trail Series - Pedernales Falls 9:13:57 h33
30.04 52.4mi USA7th Pandora's Box of Rox 50 Mile 13:26:02 h10
23.04 100Miles USA1st Shadows of the South 100 mile 34:26:46 h21
11.03 101mi USA7th J&J Race and Trail Running Reunion 100 Mile Race 32:50:29 h6
05.03 100km USA1st Dos Senderos Trail - 100km 16:04:37 h8
19.02 52mi USA6th Goodwater Trail Race Double-Marathon 12:44:16 h7
05.02 100mi USA30th Rocky Raccoon 100 Mile Trail Run 29:24:24 h161
08.01 100km USA22nd Bandera 100 km Endurance Run 17:05:16 h218
2021
03.12 100Miles USA5th Tinajas Ultra 100 Miles 33:49:56 h1 🏆
20.11 50mi USA17th Wild Hare 50 Mile Race 13:16:49 h23
06.11 100mi USA3rd Screaming Monkey 100 Mile Race 32:05:01 h6
22.10 150mi USA15th Cactus Rose 150 Mile 2d 09:03:39 h5
11.09 106mi USA10th Mogollon Monster 100 Mile 37:40:27 h82
28.08 60km USA15th Capt'n Karl's Trail Series - Reveille Peak Ranch 10:53:35 h17
08.08 60km USA15th Capt'n Karl's Trail Series - Muleshoe Bend 9:11:28 h20
07.08 60km USA15th Capt'n Karl's Trail Series - Colorado Bend 10:29:50 h24
27.06 60km USA15th Capt'n Karl's Trail Series - Pedernales Falls 9:34:06 h31
25.04 52.4mi USA6th Pandora's Box of Rox 50 Mile 13:15:30 h17
12.03 101mi USA6th J&J Race and Trail Running Reunion 100 Mile Race 32:03:51 h6
30.01 52mi USA5th Goodwater Trail Race Double-Marathon 13:26:24 h14
09.01 100km USA21st Bandera 100 km Endurance Run 17:03:05 h212
2020
05.12 150km USA4th Tinajas Ultra 150 km 35:53:50 h1 🏆
21.11 50km USA16th Wild Hare 50 km Race 6:58:31 h32
08.11 50km USA5th The Hill Country Trivium 7:25:32 h9
23.10 150mi USA14th Cactus Rose 150 Mile 2d 09:23:31 h4
29.08 60km USA14th Capt'n Karl's Trail Series - Reveille Peak Ranch 12:20:56 h15
18.07 60km USA14th Capt'n Karl's Trail Series - Muleshoe Bend 10:04:46 h13
14.03 100km USA5th J&J Race and Trail Running Reunion 100 km Race 19:01:08 h9
25.01 52mi USA4th Goodwater Trail Race Double-Marathon 11:55:52 h6
11.01 100km USA20th Bandera 100 km Endurance Run 16:54:47 h227
2019
16.11 50mi USA15th Wild Hare 50 Mile Race 12:09:30 h27
26.10 100mi USA13th Cactus Rose 100 Mile 32:56:44 h6
27.09 100km USA4th J&J Race and Trail Running Reunion 100 km Race 17:24:43 h10
21.09 50km USA3rd Piney Woods Ultra 50k 7:06:28 h15
24.08 60km USA13th Capt'n Karl's Trail Series - Reveille Peak Ranch 9:35:27 h17
03.08 60km USA13th Capt'n Karl's Trail Series - Colorado Bend 10:23:39 h28
13.07 60km USA13th Capt'n Karl's Trail Series - Muleshoe Bend 10:28:29 h33
22.06 60km USA13th Capt'n Karl's Trail Series - Pedernales Falls 10:23:12 h54
02.03 100km USA3rd Tinajas Ultra 100 km 19:46:05 h22
09.02 50km USA1st The Escarpment 50k 8:00:50 h32
26.01 52mi USA3rd Goodwater Trail Race Double-Marathon 14:53:25 h11
06.01 100km USA19th Bandera 100 km Endurance Run 20:44:17 h249
2018
15.12 60mi USA2nd Loup Garou 60 Mile Trail Run 16:31:55 h9
02.12 50km USA4th Dinosaur Valley Endurance Run 50 km 8:27:02 h22
17.11 50mi USA14th Wild Hare 50 Mile Race 13:50:01 h25
27.10 100mi USA12th Cactus Rose 100 Mile 34:41:23 h17
28.09 100km USA3rd J&J Race and Trail Running Reunion 100 km Race 21:44:24 h12
22.09 50km USA2nd Piney Woods Ultra 50k 8:46:47 h37
23.06 60km USA12th Capt'n Karl's Trail Series - Pedernales Falls 10:49:09 h35
03.03 100km USA2nd Tinajas Ultra 100 km 23:40:07 h19
10.02 50mi USA26th Rocky 50 Mile Trail Run 14:39:31 h114
27.01 52mi USA2nd Goodwater Trail Race Double-Marathon 15:45:00 h11
07.01 100km USA18th Bandera 100 km Endurance Run 18:53:30 h199
2017
09.12 12h USA2nd The Circus 12 Hour Run 54.717 km15
18.11 50mi USA13th Wild Hare 50 Mile Race 12:19:10 h20
11.11 50km USA22nd Rockledge Rumble Trail Run 7:29:16 h43
28.10 100mi USA11th Cactus Rose 100 Mile 34:28:48 h18
21.10 50mi USA33nd Palo Duro 50 Mile Trail Run 11:55:57 h35
07.10 50mi USA2nd Rawhide 50 Mile 12:44:26 h11
29.09 100km USA2nd J&J Race and Trail Running Reunion 100 km Race 22:34:16 h13
09.09 50K USA1st Mission Tejas Trail Run 7:12:16 h26
26.08 60km USA11th Capt'n Karl's Trail Series - Reveille Peak Ranch 10:25:47 h39
05.08 60km USA11th Capt'n Karl's Trail Series - Colorado Bend 11:26:39 h30
24.06 60km USA11th Capt'n Karl's Trail Series - Pedernales Falls 9:14:34 h49
29.04 52.4mi USA2nd Pandora's Box of Rox 50 Mile 14:43:09 h20
08.04 50km USA4th Toughest N’ Texas Trail Runs 50K 8:23:52 h16
18.03 50mi USA18th Grasslands 50 Mile Trail Run 13:12:15 h39
24.02 100mi USA4th Lake Ouachita Vista Trail Endurance 100 Mile Run (LOViT) 33:40:00 h20
21.01 52mi USA1st Goodwater Trail Race Double-Marathon 16:40:20 h8
07.01 100km USA17th Bandera 100 km Ultratrail 17:41:37 h151
2016
03.12 12h USA1st The Circus 12 Hour Run 62.764 km7
19.11 50mi USA12th Wild Hare 50 Mile Race 11:19:13 h20
12.11 50km USA21st Rockledge Rumble Trail Run 7:55:02 h37
22.10 100mi USA10th Cactus Rose 100 Mile 35:19:45 h17
24.09 100km USA1st J&J Race and Trail Running Reunion 100 km Race 21:54:45 h11
17.09 50km USA1st Sky Island 50K 8:54:22 h19
27.08 60km USA10th Capt'n Karl's Trail Series - Reveille Peak Ranch 10:49:34 h43
23.07 9h USA2nd Fossil Valley 9 Hour Trail Extravaganza 56.278 km20
16.07 60km USA10th Capt'n Karl's Trail Series - Muleshoe Bend 10:27:55 h34
25.06 60km USA10th Capt'n Karl's Trail Series - Pedernales Falls 10:00:43 h65
14.05 50km USA5th Whispering Pines 50 km Trail Run 7:39:08 h29
16.04 100km USA10th Vasque Free State Trail 100 km Run 16:51:31 h12
09.04 50km USA3rd Toughest N’ Texas Trail Runs 50K 9:09:10 h13
19.03 68mi USA4th Georgia Death Race 23:04:38 h137
05.03 52.4mi USA1st Pandora's Box of Rox 50 Mile 14:16:35 h22
09.01 100km USA16th Bandera 100 km Ultratrail 17:37:00 h186
2015
05.12 52km USA4th Isle du Bois Trail Run 7:41:20 h31
29.08 60km USA9th Capt'n Karl's Trail Series - Reveille Peak Ranch 10:44:24 h54
08.08 60km USA9th Capt'n Karl's Trail Series - Colorado Bend 11:55:51 h47
18.07 60km USA9th Capt'n Karl's Trail Series - Muleshoe Bend 11:17:28 h36
27.06 60km USA9th Capt'n Karl's Trail Series - Pedernales Falls 10:21:43 h46
05.06 100mi USA3rd Bryce 100 Mile Trail Run 35:51:58 h75
28.02 50mi USA6th Nueces 50 Mile Trail Run 12:50:26 h25
31.01 100mi USA23rd Rocky Raccoon 100 Mile Trail Run - US Championchips 29:06:33 h63
31.01 100mi USA23rd Rocky Raccoon 100 Mile Trail Run 29:06:33 h229
10.01 100km USA15th Bandera 100 km Ultratrail 20:11:52 h187
10.01 100km USA15th Bandera 100 km Ultratrail - US Trail Championships 20:11:52 h64
2014
25.10 100mi USA8th Cactus Rose 100 Mile 33:33:57 h33
06.09 60km USA8th Capt'n Karl's Trail Series - Reveille Peak Ranch 11:35:26 h51
09.08 60km USA8th Capt'n Karl's Trail Series - Colorado Bend 10:56:52 h53
05.04 50mi trail race USA14th Hells Hills 50 Mile Race 11:28:56 h45
01.03 50mi USA5th Nueces 50 Mile Trail Run 12:30:21 h31
11.01 100km trail race USA14th Bandera 100 km Ultratrail - Open race 17:15:51 h143
11.01 100km trail race USA14th Bandera 100 km Ultratrail - US Trail Championships 17:15:51 h60
2013
16.11 50mi USA9th Wild Hare 50 Mile Race 12:16:52 h38
24.08 60km USA7th Capt'n Karl's Trail Series - Reveille Peak Ranch 10:34:26 h50
03.08 60km USA7th Capt'n Karl's Trail Series - Colorado Bend 10:58:39 h38
13.07 60km USA7th Capt'n Karl's Trail Series - Muleshoe Bend 10:56:27 h42
22.06 60km USA7th Capt'n Karl's Trail Series - Pedernales Falls 8:39:18 h39
06.04 50mi USA13th Hells Hills 50 Mile Race 12:14:22 h52
02.03 50mi USA4th Nueces 50 Mile Trail Run 11:14:01 h50
02.02 100mi USA21st Rocky Raccoon 100 Mile Trail Run 28:29:06 h183
13.01 100km trail race USA13th Bandera 100 km Ultratrail 18:54:54 h158
13.01 100km USABandera 100 km Ultratrail - US Championchips 18:54:54 h51
2012
17.11 50km USA8th Wild Hare 50 km Race 5:55:55 h35
27.10 100mi USA6th Cactus Rose 100 Mile 32:57:25 h40
01.09 60km USA6th Capt'n Karl's Trail Series - Reveille Peak Ranch 9:50:51 h44
11.08 60km USA6th Capt'n Karl's Trail Series - Colorado Bend 10:23:53 h37
23.06 60km USA6th Capt'n Karl's Trail Series - Pedernales Falls 9:54:54 h64
20.05 50km USA25th Ohlone 50K Wilderness Run 7:58:20 h107
03.03 50km USA3rd Nueces 50 km Trail Run 6:39:30 h30
04.02 50mi USA20th Rocky Raccoon 50 Mile Trail Run 12:47:25 h187
07.01 50km USA12th Bandera 50 km Ultratrail 7:03:47 h116
2011
29.10 50mi USA5th Cactus Rose 50 Mile 13:31:29 h49