Duncan Callahan
ID 47280
Born : 1982 Cat. M40 Ultrarunner since 2007 USA
44
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
2
Countries visited ?JPNJapanUSAUnited States
4,0%
Rank quotient ?This runner's calculation uses 44 eligible race(s): Σ(rank − 1) = 260; Σ finishers = 6 451. 260 / 6 451 × 100 = 4.03%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed44
Km — ultra races4 670 km
> 100 km17
> 160 km16
Longest race160,9 km
41st Leadville Trail 100 Mile — 20/8/2023

Km per year (ultra races)

161
1 race
2022
161
1 race
2023
2024
2025
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win13
🏆 Win M13
🏅 Top 323
🏅 Top 3 M24
Longest winning streak3
Current streak0

Records

50 km3h53'45100 km9h57'4250 mi6h11'55100 mi17h43'25

HISTORY

44 race(s)
DateRacePerf.Rk
2023
20.08 100mi USA41st Leadville Trail 100 Mile 22:55:56 h32
2022
20.08 100mi USA40th Leadville Trail 100 Mile 20:54:32 h17
2017
19.08 100mi USA35th Leadville Trail 100 Mile 26:13:47 h76
09.07 50mi USA10th Leadville Silver Rush 50 Mile Run 8:56:29 h23
2015
04.07 50mi USA9th Moab's Alpine to Slickrock 50mi 12:08:38 h4
18.04 50km USA12th Desert Rats Trail Running Festival 50 km 5:22:17 h6
21.02 100mi USA2nd Antelope Canyon 100 Mile Race 21:51:20 h5
2014
01.11 100mi USA12th Javelina Jundred 100 Mile Endurance Run 19:34:43 h16
16.08 100mi USA32nd Leadville Trail 100 Mile 20:27:20 h13
14.06 100km USA1st Gunnison 100k Endurance Run 9:57:42 h1 🏆
04.05 50km USA1st Cimarron Endurance Run 3:55:37 h1 🏆
19.04 52mi USA11th Desert Rats Trail Running Festival 50 Miles 7:59:30 h1 🏆
2013
04.05 50mi USA14th Collegiate Peaks 50 Miles 7:12:50 h2 🥈
2012
06.10 50km USA11th Rock/Creek StumpJump 50K 4:32:55 h2 🥈
15.09 100mi USA6th Run Rabbit Run 100 Mile UltraMarathon - Hares Run 22:36:37 h5
28.07 52mi USA3rd Grand Mesa 50 Mile Trail Race 7:20:00 h1 🏆
18.05 156km JPN1st Ultra-Trail Mount Fuji 23:35:08 h11
21.04 50mi USA9th Desert Rats Trail Running Festival 50 Miles 7:44:21 h1 🏆
2011
20.08 100mi USA29th Leadville Trail 100 Mile 19:11:15 h9
08.07 100mi USA18th Hardrock Hundred Endurance Run 30:57:00 h8
18.06 50mi USA17th San Juan Solstice 50 Mile Run 9:54:28 h7
22.05 50mi USA3rd Sun Mountain 50 Mile Trail Races 6:16:34 h1 🏆
07.05 50mi USA12th Collegiate Peaks 50 Miles 7:34:52 h4
16.04 50mi USA8th Desert Rats Trail Running Festival 50 Miles 7:38:47 h1 🏆
26.03 50mi USA6th Antelope Island Buffalo Run 50 Mile 6:35:25 h2 🥈
19.02 55km USA5th Moab Red Hot 55k 4:32:54 h5
2010
04.09 100mi USA6th Grand Teton Races 100 Miles 19:03:58 h2 🥈
21.08 100mi USA28th Leadville Trail 100 Mile 17:43:25 h1 🏆
18.07 50mi USA3rd Leadville Silver Rush 50 Mile Run 6:50:55 h1 🏆
18.06 100mi USA19th Bighorn Mountain Wild & Scenic 100 Mile Trail Run 21:22:13 h5
29.05 50km USA3rd Sage Burner Trail Run 4:32:05 h2 🥈
17.04 50mi USA7th Desert Rats Trail Running Festival 50 Miles 8:17:48 h6
2009
05.09 50mi USA5th Grand Teton Races 50 Miles 7:33:27 h1 🏆
22.08 100mi USA27th Leadville Trail 100 Mile 18:26:40 h3 🥉
23.05 50km USA2nd Sage Burner Trail Run 4:14:51 h3 🥉
28.03 100mi USA3rd 24 Hours of Utah - 100 mile race 18:52:00 h1 🏆
07.02 50mi USA17th Rocky Raccoon 50 Mile Trail Run 6:11:55 h2 🥈
2008
16.08 100mi USA26th Leadville Trail 100 Mile 18:02:39 h1 🏆
21.06 50mi USA14th San Juan Solstice 50 Mile Run 9:29:33 h3 🥉
07.06 50km USA1st Sage Burner Trail Run 3:53:45 h2 🥈
16.02 55km USA2nd Moab Red Hot 55k 4:13:56 h4
2007
18.08 100mi USA25th Leadville Trail 100 Mile 20:35:55 h7
21.04 50mi USA4th Desert Rats Trail Running Festival 50 Miles 7:41:36 h1 🏆
17.02 55km USA1st Moab Red Hot 55k 4:51:00 h5