Mark Nassi
ID 27332
Born : 1967 Cat. M55 Ultrarunner since 1996 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
53
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 ?AUSAustraliaFRAFranceITAItalyUSAUnited States
57,7%
Rank quotient ?This runner's calculation uses 58 eligible race(s): Σ(rank − 1) = 7 869; Σ finishers = 13 633. 7 869 / 13 633 × 100 = 57.72%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed58
Km — ultra races5 278 km
> 100 km11
> 160 km10
Longest race168,0 km
11ème Ultra Trail Tour du Mont Blanc (UTMB) — 30/8/2013

Km per year (ultra races)

180
2 races
2022
150
2 races
2023
100
1 race
2024
150
2 races
2025
2026

Race types (share of distance)

Road5,0%
Trail95,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M2
Longest winning streak0
Current streak0

Records

50 km5h26'00100 km13h36'2350 mi9h32'53100 mi22h50'5112 h86,74 km

HISTORY

58 race(s)
DateRacePerf.Rk
2025
22.11 100km USA11th Dinosaur Valley Endurance Run 100 km 17:00:10 h70
12.04 50km USA32nd Leona Divide 50 km Run 7:27:10 h60
2024
13.04 100km USA13th The Zion 100 km Run 18:24:18 h134
2023
21.10 100km USA3rd Lake Sonoma 100K & 50K 16:58:09 h174
04.03 50km USA10th Monument Valley 50 km Race 9:00:27 h55
2022
12.02 99.9km USA9th Black Canyon Trail 100 km Run 15:18:40 h296
08.01 50mi USA42th Avalon Benefit 50 Mile Run 11:33:11 h161
2021
05.12 50km USA13th Hunter S. Thompson Fear & Loathing 50 km 6:02:00 h11
08.05 50mi USA5th Orcas Island 50 Miler 14:14:53 h24
26.03 50mi USA16th Antelope Island Buffalo Run 50 Mile 10:53:47 h83
14.02 100km USA8th Black Canyon Trail 100 km Run 16:12:05 h262
2019
19.05 50km USA32nd Ohlone 50K Wilderness Run 7:42:21 h46
16.02 100km USA6th Black Canyon Trail 100 km Run 14:21:03 h317
20.01 50km USA9th Crystal Springs 50 km Winter Trail Run 6:07:54 h24
2018
24.11 100mi AUSAlpine Challenge 100 Mile 33:42:34 h56
21.07 100mi USA30th Vermont 100 Mile Endurance Race 26:14:03 h177
02.06 100mi USA40th Old Dominion 100 Mile Endurance Run 27:48:07 h55
20.05 50km USA31th Ohlone 50K Wilderness Run 7:32:19 h71
17.02 100km USA5th Black Canyon Trail 100 km Run 16:15:53 h255
2017
15.07 100mi USA29th Vermont 100 Mile Endurance Race 25:43:57 h162
21.05 50km USA30th Ohlone 50K Wilderness Run 9:00:25 h83
15.04 50mi USA9th Lake Sonoma 50 Mile Race 12:43:24 h235
01.04 50mi USA38th American River 50 Mile Endurance Run 11:28:39 h218
18.02 100km USA4th Black Canyon Trail 100 km Run 16:08:35 h191
2016
06.08 100mi USA29th Angeles Crest 100 Mile 31:07:53 h92
17.06 100mi USA24th Bighorn Mountain Wild & Scenic 100 Mile Trail Run 31:49:41 h124
07.05 100km USA21st Miwok 100k Trail Race 14:16:00 h190
09.04 50km USA2nd Woodside Purisima Creek Crossover 7:10:50 h41
2015
31.10 100mi USA13th Javelina Jundred 100 Mile Endurance Run 22:50:51 h69
09.05 50km USA2nd Gold Rush 50k 6:29:05 h48
02.05 50km USA2nd The Canyons Endurance 50 km Run 9:32:04 h65
2014
01.11 100mi USA12th Javelina Jundred 100 Mile Endurance Run 23:18:02 h72
06.09 50mi USA1st Overlook Endurance Run 50M 13:07:31 h19
27.06 119km ITA8^ Lavaredo Ultra Trail by UTMB - 120K 23:55:51 h355
03.05 100km USA19th Miwok 100k Trail Race 14:17:06 h203
05.04 50mi USA35th American River 50 Mile Endurance Run 10:08:53 h286
02.03 50km USA1st Run for Amma 50 km 7:30:00 h4
2013
30.08 168km FRA11ème Ultra Trail Tour du Mont Blanc 41:13:40 h878
11.05 50mi USA30th Quicksilver 50 Mile Endurance Run 11:36:18 h65
13.04 50mi USA5th Lake Sonoma 50 Mile Race 13:11:42 h249
2012
25.02 50km USA2nd Chabot Trail Run 5:51:30 h28
2011
16.07 50mi USA10th Tahoe Rim Trail 50M Endurance Run 14:14:11 h100
22.05 50km USA24th Ohlone 50K Wilderness Run 7:43:06 h121
09.04 50mi USA32nd American River 50 Mile Endurance Run 10:22:47 h309
2010
17.07 100km USA3rd Vermont 100 km Endurance Race 13:36:23 h2 🥈
01.05 100km USA15th Miwok 100k Trail race 13:39:50 h175
2009
27.06 100mi USA36th Western States 100 Mile Endurance Run 29:33:33 h210
02.05 100km USA14th Miwok 100k Trail race 14:17:14 h187
28.03 50mi USA2nd Lake Sonoma 50 Mile Race 11:38:40 h73
28.02 50km USA5th Sequoia Trail Run 6:21:56 h52
2008
23.08 50mi USA1st Wildest Run in the West 50 Miles 12:58:00 h7
03.05 100km USA13th Miwok 100k Trail race 13:51:02 h194
05.04 50mi USA29th American River 50 Mile Endurance Run 9:32:53 h172
08.03 50km USA19th Way Too Cool 50K Endurance Run 5:26:00 h185
2007
20.05 50km USA20th Ohlone 50K Wilderness Run 7:34:44 h91
2006
28.10 12h USA1st San Francisco One Day, 12h 86.743 km10
1998
20.09 12h USA6th DSE Distance Classic 12 Hour 81.175 km8
1996
06.10 12h USA4th DSE Distance Classic 12 Hour 48.195 km23