Nattu Natraj
Born : 1963 Cat. M60 Ultrarunner since 2004 USA
80
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
80
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
3
Countries visited ?FRAFranceMARMoroccoUSAUnited States
61,2%
Rank quotient ?This runner's calculation uses 153 eligible race(s): Σ(rank − 1) = 13 471; Σ finishers = 22 014. 13 471 / 22 014 × 100 = 61.19%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed158
Km — ultra races14 185 km
> 100 km39
> 160 km33
> 200 km4
> 24h9
> 48h1
Longest race245,7 km

Km per year (ultra races)

541
8 races
2022
468
7 races
2023
517
8 races
2024
606
8 races
2025
210
4 races
2026

Race types (share of distance)

Road22,7%
Trail74,4%
Stage2,9%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 33
🏅 Top 3 M4
Longest winning streak0
Current streak0

HISTORY

154 race(s)
DateRacePerf.Rk
2026
09.08 50km USA13th Marlette Lake Tahoe 50K 9:08:36 h90
18.04 60km USA11th Whiskey Basin 60 km Trail Run 10:41:35 h75
28.03 50km USA34th Crown King Scramble 50K 10:53:14 h273
31.01 50km USA48th Jed Smith Ultra Classic - 50 km Race 6:08:19 h38
2025
28.12 100mi USA41st Across The Years, 100mi 44:55:02 h65
27.09 50km USA14th Flagstaff Sky Peaks 50 km Mountain Run 8:43:53 h61
20.09 55km USA13th Flagstaff to Grand Canyon Stagecoach Line 55km 7:37:04 h22
07.06 50km USA40th Silver State 50 km 8:47:36 h57
06.05 78mi USA5th Cocodona Mingus Traverse 29:13:22 h25
19.04 34mi USA4th Red Rocks of Sedona East Side The VUE 34 Miles 9:25:55 h55
12.04 60km USA10th Whiskey Basin 60 km Trail Run 10:22:38 h73
22.03 50km USA33rd Crown King Scramble 50K 9:20:34 h210
2024
28.12 100mi USA41th Across The Years, 100mi 31:15:52 h34
28.09 50km USA13th Flagstaff Sky Peaks 50 km Mountain Run 8:54:18 h42
21.09 55km USA12th Flagstaff to Grand Canyon Stagecoach Line 55km 8:26:09 h43
11.08 50km USA11th Marlette Lake Tahoe 50K 7:48:55 h62
23.03 51.3km USA32nd Crown King Scramble 50K 8:46:17 h206
27.01 50km USA9th Folsom Lake Sweetwater Trail Run 7:26:13 h16
13.01 50km USA3rd Meat Grinder Trail Race 6:52:13 h22
06.01 50km USA3rd No Hands Trail Run 8:39:24 h54
2023
09.12 50km USA1st Doomsday 8:21:29 h35
16.09 55km USA11th Flagstaff to Grand Canyon Stagecoach Line 55km 8:09:02 h56
10.06 50mi USA13th Cool Moon 50 Mile Endurance Run 13:43:07 h22
25.03 50km USA31st Crown King Scramble 50K 7:54:20 h143
04.03 50mi USA33th Old Pueblo 50 Mile Endurance Run 14:32:25 h39
18.02 99.9km USA10th Black Canyon Trail 100 km Run 18:50:31 h661
14.01 52km USA13th Coldwater Rumble 52K Race 7:37:23 h50
2022
31.12 100mi USA38th Across The Years, 100mi 32:46:06 h17
13.08 50km USA9th Marlette Lake Tahoe 50K 7:48:56 h62
21.05 50km USA37th Silver State 50 km 8:29:03 h57
23.04 50km USA9th The Canyons Endurance 50 km Run 8:43:26 h138
01.04 50km USA3rd April Fools Tour de Sedona 8:48:25 h21
26.03 50km USA30th Crown King Scramble 50K 8:25:47 h113
12.03 50mi USA10th Marin Ultra Challenge 50 Mile Race 12:47:53 h116
19.02 50km USA10th FOURmidable 50K 7:05:02 h109
2020
15.02 50km USA8th FOURmidable 50K 6:49:19 h110
2019
18.05 50mi USA34th Silver State 50 Mile 12:45:20 h53
13.04 50mi USA11th Lake Sonoma 50 Mile Race 12:17:24 h190
16.03 50km USA4th Ruck a Chuck 50K 6:29:18 h50
16.02 50km USA7th FOURmidable 50K 6:57:07 h121
2018
05.10 100mi USA10th Grindstone 100 Mile 35:48:51 h176
23.06 100mi USA45th Western States 100 Mile Endurance Run 29:23:23 h259
12.05 100km USA35th Quicksilver 100 km Endurance Run 15:45:25 h130
28.04 100km USA5th The Canyons Endurance 100 km Run 17:10:11 h203
17.03 50km USA3rd Ruck a Chuck 50K 7:04:38 h83
17.02 50km USA6th FOURmidable 50K 6:19:18 h60
2017
08.09 100mi USA38th Wasatch Front 100 Mile 35:07:51 h181
26.08 100km USA3rd Castle Peak 100 19:06:06 h50
13.08 50km USA4th Marlette Lake Tahoe 50K 6:33:13 h24
15.07 100mi USA29th Vermont 100 Mile Endurance Race 28:05:57 h227
13.05 100km USA34th Quicksilver 100 km Endurance Run 15:52:32 h137
29.04 100km USA4th The Canyons Endurance 100 km Run 17:14:38 h156
01.04 50mi USA38th American River 50 Mile Endurance Run 11:41:58 h237
2016
16.09 100mi USA10th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run 32:14:00 h79
27.08 100km USA2nd Castle Peak 100 17:52:04 h44
19.06 54km USA1st The Broken Arrow Skyrace 10:11:35 h119
14.05 100km USA33rd Quicksilver 100 km Endurance Run 13:46:24 h59
07.05 100km USA3rd The Canyons Endurance 100 km Run 15:28:12 h94
10.04 50km USA1st Ruck a Chuck 50K 5:23:10 h12
26.03 50mi USA4th San Francisco 50 Mile Endurance Run 10:47:13 h15
12.03 50mi USA5th Marin Ultra Challenge 50 Mile Race 11:17:22 h59
27.02 50km USA2nd Salmon Falls 50 km Race 5:47:36 h44
2015
28.09 100km USA1st Castle Peak 100 15:58:11 h24
25.09 100mi USA17th The Bear 100 Mile Endurance Run 32:23:54 h135
18.07 100mi USA27th Vermont 100 Mile Endurance Race 23:29:02 h95
09.05 100km USA32nd Quicksilver 100 km Endurance Run 13:14:09 h70
02.05 100km USA2nd The Canyons Endurance 100 km Run 16:57:06 h56
11.04 50mi USA7th Lake Sonoma 50 Mile Race 10:36:57 h149
14.03 50km USA4th Marin Ultra Challenge 50 km Race 6:51:35 h83
2014
17.08 50km USA1st Marlette Lake Tahoe 50K 6:24:10 h18
02.08 50mi USA4th Echo Summit Trail Challenge 50 Mile 13:25:00 h2 🥈
12.07 50km trail race USA4th Golden Gate 50 km Summer Trail Run 6:32:56 h38
10.05 100km USA31st Quicksilver 100 km Endurance Run 15:43:46 h62
19.04 50km USAMokelumne River 50 km Trail Run 5:38:51 h18
18.01 100mi USA14th HURT 100 Endurance Run 100 Mile 35:31:00 h47
2013
16.11 100mi USA5th The Chimera 100 Mile Mountain Race 31:33:46 h71
05.10 50km USA4th Diablo 50 km Trail Run 7:18:15 h11
03.08 50mi USA1st San Francisco 50 Mile Endurance Run 11:11:55 h24
29.06 100mi USA40th Western States 100 Mile Endurance Run 29:12:09 h236
18.05 50mi USA20th Bishop High Sierra Ultramarathons 50 Miles 11:48:32 h29
13.04 50mi USA5th Lake Sonoma 50 Mile Race 11:21:55 h182
30.03 68mi USA1st Coyote Cohorts Backbone Trail Ultra 17:26:00 h66
24.02 50mi USA1st San Bruno Mountain 50 Mile Ultramarathon 11:00:22 h13
2012
27.10 100km USA10th Javelina Jundred 100 km Endurance Run 14:46:12 h58
13.10 50km USA2nd Horseshoe Lake 50 km Fall Trail Run 6:32:03 h21
31.08 103.4km trail race FRA10ème Ultra Trail Tour du Mont Blanc (UTMB) 23:27:14 h1729
19.05 50mi USA19th Bishop High Sierra Ultramarathons 50 Miles 10:47:11 h16
12.05 50mi USA29th Quicksilver 50 Mile Endurance Run 10:37:57 h44
05.05 100km USA17th Miwok 100k Trail race 13:55:19 h110
28.04 50mi USA20th Leona Divide 50 Mile Run 10:36:17 h106
21.04 50mi USA26th Ruth Anderson Ultra 50mi 7:48:14 h3 🥉
14.04 50mi USA4th Lake Sonoma 50 Mile Race 11:08:13 h143
07.04 50mi USA33rd American River 50 Mile Endurance Run 8:35:11 h113
18.02 38mi USA1st Folsom South Side Trail Run 38 Miles 8:13:15 h9
04.02 50mi USA34th Jed Smith Ultra Classic - 50 Mile Race 7:49:14 h8
2011
31.12 24h USA28th Across the Years, 24h 108.128 km42
12.11 100mi USA9th Javelina Jundred 100 Mile Endurance Run 23:43:58 h60
29.10 100mi USA5th Cactus Rose 100 Mile 29:24:39 h21
10.09 100mi USA11th Rio Del Lago 100 Mile 30:05:56 h24
21.05 50mi USA18th Bishop High Sierra Ultramarathons 50 Miles 12:26:40 h30
07.05 100km USA16th Miwok 100k Trail race 13:54:04 h197
30.04 50km USA28th Quicksilver 50 km Endurance Run 6:14:54 h50
09.04 50mi USA32nd American River 50 Mile Endurance Run 9:52:41 h239
2010
31.12 24h USA27th Across the Years, 24h 91.500 km27
11.09 50km USA10th Rio Del Lago 50 km 5:59:50 h7
01.08 50km USA29th Skyline 50k Endurance Run 5:51:47 h83
17.07 50mi USA4th Headlands Hundred 50 Mile Endurance Run 11:47:43 h50
01.05 100km USA15th Miwok 100k Trail race 13:06:23 h141
17.04 50mi USA24th Ruth Anderson Ultra 50mi 8:23:37 h8
2009
31.10 100km USA7th Javelina Jundred 100 km Endurance Run 13:44:22 h20
26.09 100km USA23th Sierra Nevada Endurance 100 km Run 16:06:32 h11
06.09 50km USA14th Run On The Sly 50 km 6:11:55 h26
13.07 131mi USA23rd Badwater Ultramarathon - 131mi Split and Finish 35:55:00 h33
13.07 135mi USA23rd Badwater Ultramarathon 37:10:31 h32
06.06 50km USA9th Mount Diablo 50K 7:37:09 h50
16.05 100mi USA2nd Keys100 Ultra-Marathons 100mi 21:05:00 h5
18.04 50km USA23th Ruth Anderson Ultra 50km 4:23:32 h10
13.03 100km USA2nd Coyote Two Moon Ultras 100 km 18:14:00 h16
28.02 50km USA5th Sequoia Trail Run 6:23:34 h55
2008
31.12 24h USA26th Across the Years, 24h 163.500 km7
06.12 50km USA7th Woodside Trail Run 50K 5:20:35 h19
08.11 100mi USA2nd Mother Road 100 Mile 20:58:02 h13
25.10 24h USA3rd San Francisco One Day, 24h 115.068 km34
11.10 50mi USA26th Dick Collins Firetrails 50 Mile 9:48:28 h64
20.09 50km USA1st Skyline to the Sea 50km 6:13:11 h85
09.08 50mi USA2nd Headlands Hundred 50 Mile Endurance Run 11:11:45 h42
03.08 50km USA27th Skyline 50k Endurance Run 5:42:07 h50
20.07 50mi USA1st Leadville Silver Rush 50 Mile Run 11:08:23 h64
19.04 50km USA4th Greenland Trail Race 6:06:08 h57
12.04 50mi USA6th Diablo Endurance Run 15:45:04 h76
2007
30.12 24h USA25th Across the Years, 24h 99.000 km36
17.11 24h USA7th Ultracentric 24 Hour Run 80.467 km73
28.10 100km USA5th Javelina Jundred 100 km Endurance Run 16:45:56 h17
22.09 100mi USA8th Rio Del Lago 100 Mile 28:36:29 h51
25.08 100mi USA3rd Lean Horse Ultra-Marathon 100 Mile 25:39:00 h35
23.07 135mi USA21st Badwater Ultramarathon 41:00:54 h34
19.05 100mi USA13th Massanutten Mountain Trails 100 Mile 34:27:25 h73
14.04 50km USA3rd Greenland Trail Race 6:41:14 h48
03.02 100mi USA15th Rocky Raccoon 100 Mile Trail Run 27:45:51 h128
13.01 50km USA7th Bandera 50 km Ultratrail 8:21:27 h85
2006
30.12 48h USA24th Across the Years, 48h 166.500 km18
10.11 100mi USA1st Mother Road 100 Mile 25:54:25 h58
07.10 100mi USA16th Arkansas Traveller 100 29:03:18 h66
24.07 135mi USA20th Badwater Ultramarathon 46:22:29 h50
15.04 50mi USA6th McNaughton 50 Mile Ultra Race 12:06:07 h23
2005
31.12 24h USA23rd Across the Years, 24h 161.500 km14
19.11 50mi USA43rd JFK 50 Mile 10:51:35 h552
03.09 100mi USA1st Grand Teton Races 100 Miles 35:17:58 h6
17.06 50mi USA14th Bighorn Mountain Wild & Scenic 50mi Trail Run 13:50:35 h51
10.04 245.7km/6stages MAR20. Marathon des Sables 46:03:50 h406
2004
31.12 24h USA22nd Across the Years, 24h 115.500 km20
09.10 50mi USA5th Heartland 50 Mile Race 10:23:58 h3 🥉
18.06 50km USA13th Bighorn Mountain Wild & Scenic 50km Trail Run 7:53:14 h97
Unknown date
— 100mi USA13th Jackpot Ultra Running Festival 100 Mile Race 34:04:48 h42