Jeffrey O'Reilly
ID 47502
Born : 1960 Cat. M65 Ultrarunner since 2005 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
55
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
56,6%
Rank quotient ?This runner's calculation uses 57 eligible race(s): Σ(rank − 1) = 3 843; Σ finishers = 6 784. 3 843 / 6 784 × 100 = 56.65%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed57
Km — ultra races4 542 km
> 100 km3
> 160 km1
> 200 km1
> 24h3
Longest race383,0 km
4th Moab 240 Endurance Run — 9/10/2020

Km per year (ultra races)

69
1 race
2022
2023
130
2 races
2024
161
2 races
2025
161
2 races
2026

Race types (share of distance)

Road4,7%
Trail95,3%

Wins & podiums (ultra)

🏆 Win1
🏆 Win M1
🏅 Top 32
🏅 Top 3 M3
Longest winning streak1
Current streak0

Records

50 km4h46'18100 km13h39'2150 mi9h32'0224 h138,27 km

HISTORY

57 race(s)
DateRacePerf.Rk
2026
25.07 50mi USA17th Grand Mesa 50 Mile Trail Race 13:38:19 h40
20.06 50mi USA7th Bears Ears 50mi Ultra Race 15:03:38 h31
2025
22.03 50mi USA12th Behind the Rocks 50 Mile Race 13:28:31 h52
25.01 50mi USA8th Arches Ultra 50 Mile Race 11:28:03 h57
2024
16.11 50mi USA10th Dead Horse 50 Mile Race 10:51:59 h127
24.08 50km USA9th Continental Divide Trail Run 6:45:15 h61
2022
13.02 30h USA5th Stories Ultra 30 Hour Run 69.169 km21
2021
27.03 50mi USA8th Behind the Rocks 50 Mile Race 12:53:27 h79
2020
09.10 238mi USA4th Moab 240 Endurance Run 4d 15:20:20 h121
25.07 100km USA6th Never Summer 100k 18:51:12 h123
08.02 30h USA3rd Stories Ultra 30 Hour Run 117.385 km9
25.01 50mi USA3rd Arches Ultra 50 Mile Race 10:14:16 h50
2019
16.11 50mi USA5th Dead Horse 50 Mile Race 11:57:51 h145
27.07 100km USA5th Never Summer 100k 21:49:17 h170
14.06 52mi USA27th Bighorn Mountain Wild & Scenic 50mi Trail Run 13:34:25 h62
26.01 50mi USA2nd Arches Ultra 50 Mile Race 11:33:50 h67
2018
08.09 9:11h USA6th American Heroes Races - 9 hour 11 minute Run 62.764 km5
24.03 50km USA5th Behind the Rocks 50km Race 8:08:08 h142
2016
23.07 100km USA2nd Never Summer 100k 23:16:22 h187
02.04 50mi USA3rd Behind the Rocks 50 Mile Race 13:32:59 h41
13.02 55km USA10th Moab Red Hot 55k 7:49:50 h246
2015
08.08 38mi USA3rd Telluride Mountain Run 12:46:24 h50
14.02 55km USA9th Moab Red Hot 55k 6:29:32 h138
2014
15.02 55km USA8th Moab Red Hot 55k 6:16:04 h138
2013
10.08 38mi USA1st Telluride Mountain Run 11:27:28 h42
14.06 50mi USA22th Bighorn Mountain Wild & Scenic 50mi Trail Run 12:44:35 h85
16.02 55km USA7th Moab Red Hot 55k 6:12:03 h118
2012
15.09 50mi USA6th Run Rabbit Run 50 Mile UltraMarathon 11:17:14 h53
18.02 55km USA6th Moab Red Hot 55k 6:42:00 h120
2011
17.09 50mi USA5th Run Rabbit Run 50 Mile UltraMarathon 11:26:00 h49
11.09 9:11h USA2nd American Heroes Races - 9 hour 11 minute Run 79.421 km1 🏆
17.07 50mi USA4th Leadville Silver Rush 50 Mile Run 10:50:29 h122
18.06 50mi USA17th San Juan Solstice 50 Mile Run 14:57:56 h133
21.05 50mi USA6th Jemez Mountain 50mi Trail Run 15:09:14 h94
19.02 55km USA5th Moab Red Hot 55k 6:07:15 h70
16.01 50km USA7th Calico Trail Run 50 km 5:12:44 h20
2010
18.09 50mi USA4th Run Rabbit Run 50 Mile UltraMarathon 11:23:00 h66
11.09 9:11h USA1st American Heroes Races - 9 hour 11 minute Run 73.353 km2 🥈
2009
26.07 50mi USA2nd Leadville Silver Rush 50 Mile Run 10:38:50 h60
19.05 50mi USA4th Jemez Mountain 50mi Trail Run 16:29:19 h95
02.05 50mi USA10th Collegiate Peaks 50 Miles 9:55:24 h31
25.04 50mi USA20th Zane Grey 50 Mile Endurance Run 12:41:54 h34
14.02 55km USA3rd Moab Red Hot 55k 6:04:59 h55
10.01 100km USA9th Bandera 100 km Ultratrail 13:39:21 h26
2008
20.07 50mi USA1st Leadville Silver Rush 50 Mile Run 9:59:03 h32
21.06 50mi USA14th San Juan Solstice 50 Mile Run 13:50:06 h70
17.05 50mi USA3rd Jemez Mountain 50mi Trail Run 12:19:25 h32
03.05 50mi USA9th Collegiate Peaks 50 Miles 9:32:02 h18
19.04 50km USA4th Greenland Trail Race 5:08:33 h29
29.03 24h USA2nd 24 Hours of Utah 138.274 km4
16.02 55km USA2nd Moab Red Hot 55k 6:24:52 h80
2007
15.09 50mi USA1st Run Rabbit Run 50 Mile UltraMarathon 11:55:00 h33
05.05 50mi USA8th Collegiate Peaks 50 Miles 10:48:20 h33
14.04 50km USA3rd Greenland Trail Race 5:20:11 h29
2006
28.10 50km USA2nd Goblin Valley Ultra 50k 4:46:18 h16
07.10 50km USA3rd Telegraph Trail 50K 6:12:49 h33
2005
29.10 50km USA1st Goblin Valley Ultra 50k 6:03:37 h53