Jeff Bailey
ID 502843
Born : 1974 Cat. M50 Ultrarunner since 2014 USA
50
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
50
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
49,2%
Rank quotient ?This runner's calculation uses 54 eligible race(s): Σ(rank − 1) = 3 671; Σ finishers = 7 457. 3 671 / 7 457 × 100 = 49.23%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed54
Km — ultra races3 759 km
> 100 km5
> 160 km4
Longest race160,9 km
25th San Diego 100 Mile Endurance Run — 1/5/2026

Km per year (ultra races)

137
2 races
2022
200
4 races
2023
280
4 races
2024
367
6 races
2025
391
5 races
2026

Race types (share of distance)

Trail100,0%

Records

50 km4h30'43100 km15h01'5550 mi10h31'17100 mi24h22'37

HISTORY

54 race(s)
DateRacePerf.Rk
2026
05.09 50km USA18th Noble Canyon 50k 6:32:31 h58
15.08 50km USA35th Bulldog 50k Ultra Run 6:11:23 h71
06.06 50mi USA23rd PCT 50 Mile Trail Run 13:12:09 h61
01.05 100mi USA25th San Diego 100 Mile Endurance Run 30:47:31 h91
18.04 50km USA33rd Leona Divide 50 km Run 5:55:24 h11
2025
06.12 50km USA11th Ray Miller 50 km Trail Race 6:24:20 h39
27.09 50km USA20th Angeles National Forest 50k Trail Race 7:43:04 h22
16.08 50km USA34th Bulldog 50k Ultra Run 5:41:08 h49
10.05 50mi USA22nd PCT 50 Mile Trail Run 13:09:41 h63
12.04 50mi USA32nd Leona Divide 50 Mile Run 12:24:44 h25
15.03 35mi USA26th Santa Barbara Nine Trails 35 Mile Endurance Run 9:09:13 h59
2024
19.10 50km USA10th No Name 5025 - 50 km Run 5:44:49 h9
28.09 50km USA7th Rocky Peak Trail Races 6:51:18 h18
10.02 99.9km USA11th Black Canyon Trail 100 km Run 15:39:50 h420
27.01 50mi USA11th Sean O'Brien 50 Mile Trail Race 13:41:39 h31
2023
14.10 50km USA9th No Name 5030 - 50 km Run 5:37:48 h20
19.08 50km USA32th Bulldog 50k Ultra Run 5:29:35 h35
29.07 50km USA12th Harding Hustle 50K 6:52:07 h30
23.04 50km USA30th Leona Divide 50 km Run 8:11:40 h46
2022
23.04 50mi USA29th Leona Divide 50 Mile Run 12:20:47 h50
19.03 35mi USA24th Santa Barbara Nine Trails 35 Mile Endurance Run 11:10:32 h78
2021
20.11 35mi USA23rd Santa Barbara Nine Trails 35 Mile Endurance Run 11:02:33 h115
02.10 50km USA30th Bulldog 50k Ultra Run 5:42:19 h22
2019
07.12 50mi USA6th Ray Miller 50 Mile Trail Race 12:11:47 h67
26.10 100mi USA17th Javelina Jundred 100 Mile Endurance Run 24:22:37 h161
19.10 50km USA3rd Rocky Peak Trail Races 6:48:19 h27
24.08 50km USA28th Bulldog 50k Ultra Run 5:52:49 h34
06.07 60km USA14th Angeles National Forest 60k Trail Race 8:59:38 h27
07.06 100mi USA18th San Diego 100 Mile Endurance Run 29:00:53 h93
11.05 50mi USA16th PCT 50 Mile Trail Run 10:31:17 h38
06.04 50mi USA27th Leona Divide 50 Mile Run 12:27:24 h58
2018
20.10 50km USA2nd Rocky Peak Trail Races 6:45:54 h20
25.08 50km USA27th Bulldog 50k Ultra Run 5:35:20 h34
07.07 50km USA13th Angeles National Forest 50k Trail Race 8:08:47 h42
22.04 50km USA13th Spokane River Run 50K 4:30:43 h7
14.04 50km USA26th Leona Divide 50 km Run 9:06:43 h167
31.03 50mi USA12th Old Goat's 50 Mile Trail Race 14:18:13 h42
2017
26.08 50km USA26th Bulldog 50k Ultra Run 7:42:46 h83
09.06 100mi USA16th San Diego 100 Mile Endurance Run 30:55:39 h151
22.04 50km USA25th Leona Divide 50 km Run 8:29:45 h176
01.04 50mi USA11th Old Goat's 50 Mile Trail Race 12:29:48 h42
11.03 68mi USA3rd Coyote Cohorts Backbone 68 Mile Trail Ultra 20:37:59 h55
04.02 100km USA4th Sean O'Brien 100 km Trail Race 15:01:55 h119
2016
27.08 50km USA25th Bulldog 50k Ultra Run 5:42:58 h56
09.07 50km USA11th Angeles National Forest 50k Trail Race 10:13:36 h88
16.04 50mi USA24th Leona Divide 50 Mile Run 11:16:21 h68
26.03 50mi USA10th Old Goat's 50 Mile Trail Race 13:26:42 h33
30.01 50km USA6th Bandit Ultra 50K Trail Run 6:29:51 h34
2015
12.12 50km USA6th Malibu Canyon 50 km Trail Run 6:00:55 h19
22.08 50km USA24th Bulldog 50k Ultra Run 7:06:16 h158
25.04 50mi USA23rd Leona Divide 50 Mile Run 12:38:28 h101
15.02 50km USA5th Bandit Ultra 50K Trail Run 7:03:44 h64
2014
26.04 50mi USA22nd Leona Divide 50 Mile Run 12:21:06 h157
16.02 50km USA4th Bandit Ultra 50K Trail Run 7:15:04 h81