Michael Vieyra
ID 47201
Born : 1954 Cat. M70 Ultrarunner since 1983 USA
33
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
42
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
22,6%
Rank quotient ?This runner's calculation uses 34 eligible race(s): Σ(rank − 1) = 1 116; Σ finishers = 4 939. 1 116 / 4 939 × 100 = 22.60%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed34
Km — ultra races2 675 km
> 100 km4
> 160 km4
> 24h1
> 48h1
Longest race160,9 km
20th Vermont 100 Mile Endurance Race — 19/7/2008

Km per year (ultra races)

2022
2023
2024
45
1 race
2025
2026

Race types (share of distance)

Road29,0%
Trail67,7%
?3,3%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 33
🏅 Top 3 M3
Longest winning streak1
Current streak0

Records

50 km4h02'0550 mi6h34'55100 mi19h55'056 h47,82 km12 h80,47 km48 h89,13 km

HISTORY

34 race(s) · 2 split(s) nested
DateRacePerf.Rk
2025
22.11 12h USA8th Oakwood 24 - 12h 45.061 km20
2019
23.08 48h USA2nd Six Days in the Dome - The Redux 48h 89.134 km28
08.06 50km USA40th Laurel Highlands 50 km Ultra 7:06:15 h26
2017
21.01 50mi USA6th Angela Ivory 50M Memorial Run 12:38:06 h2 🥈
2016
23.01 50mi USA5th Angela Ivory 50K Memorial Run 12:45:11 h3 🥉
2015
10.10 50mi USA33rd Dick Collins Firetrails 50 Mile 10:45:28 h82
10.05 50mi USA1st Rhode Island Red Run 50 Mile 9:58:00 h1 🏆
2014
08.02 50km USA16th Pemberton Trail 50 km 5:10:25 h44
11.01 50km USA3rd Angela Ivory 50K Memorial Run 9:02:00 h11
2013
17.05 50km USAPharghost Past 50k 7:28:49 h10
17.05 50km USAPharghost Future 50k 6:22:34 h7
12.01 50km USA2nd Angela Ivory 50K Memorial Run 7:53:27 h12
2010
17.01 38.5mi USA5th The Ghost Town 38.5 7:38:38 h29
2009
15.11 6h USA1st Rhode Island 6 Hour Ultra 47.818 km48
10.10 50km USA1st Oil Creek 50 km Trail Run 7:22:36 h39
11.07 50km USA15th Rattlesnake Trail 50K Ultrarun 8:11:37 h83
2008
11.10 50mi USA9th Tussey Mountainback 50 Miler 9:03:25 h36
19.07 100mi USA20th Vermont 100 Mile Endurance Race 22:35:46 h38
12.04 50mi USA16th Bull Run Run 50 Miler 10:00:31 h74
2005
25.06 100mi USA32th Western States 100 Mile Endurance Run 22:32:27 h61
2004
18.10 12h USA25th Presque Isle 12 Hour Endurance Classic 80.467 km16
2002
23.11 50mi USA40th JFK 50 Mile 8:34:00 h85
19.10 12h USA23th Presque Isle 12 Hour Endurance Classic 80.467 km13
2000
15.04 50mi USA8th Bull Run Run 50 Miler 9:02:27 h42
1999
26.06 100mi USA26th Western States 100 Mile Endurance Run 23:02:22 h40
17.04 50mi USA7th Bull Run Run 50 Miler 8:45:13 h33
27.03 50km USA6th GNC 50 km Run Challenge 4:02:05 h25
13.02 50km USA21st Jed Smith Ultra Classic - 50 km Race 4:32:36 h43
1998
06.06 100mi USA20th Old Dominion 100 Mile Endurance Run 19:55:05 h9
1997
22.11 50mi USA35th JFK 50 Mile 8:24:31 h77
1989
18.11 50mi USA27th JFK 50 Mile 8:24:40 h58
1987
12.09 50mi USA4th Groundhog Fall 50 Mile Endurance Run 7:22:30 h7
1984
14.10 50mi USAAMJA 50 Mile Ultramarathon 6:41:23 h29
1983
02.10 50mi USAAMJA 50 Mile Ultramarathon 6:34:55 h19