Tsuyoshi Darby
ID 1237158
Born : 1988 Cat. M35 Ultrarunner since 2019 USA
43
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
1
Countries visited ?USAUnited States
55,6%
Rank quotient ?This runner's calculation uses 43 eligible race(s): Σ(rank − 1) = 1 655; Σ finishers = 2 978. 1 655 / 2 978 × 100 = 55.57%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed43
Km — ultra races4 321 km
> 100 km15
> 160 km15
> 200 km1
> 24h1
Longest race201,2 km
3rd Cocodona 125 Mile Race — 3/5/2023

Km per year (ultra races)

1 007
8 races
2022
932
6 races
2023
472
5 races
2024
224
2 races
2025
100
1 race
2026

Race types (share of distance)

Trail98,8%
Elim.1,2%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 30
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km4h48'08100 km19h12'0650 mi9h45'14100 mi27h37'25

HISTORY

43 race(s)
DateRacePerf.Rk
2026
10.07 100km USA12th Silverheels Trail Run - 100km 23:58:00 h23
2025
07.06 100mi USA5th Mace's Hideout 100 Mile Race 36:21:50 h18
15.02 30h USA8th Stories Ultra 30 Hour Run 63.343 km14
2024
02.11 50km USA3rd Bridge Burner Ultra 7:27:19 h28
27.07 100mi USA3rd Creede 100 39:15:00 h13
01.06 100mi USA4th Mace's Hideout 100 Mile Race 37:11:22 h16
11.05 50km USA19th Jemez Mountain 50km Trail Run 8:43:56 h97
13.04 50km USA10th Rattler Trail Race 50K 7:59:27 h49
2023
30.09 100mi USA1st Rio Grande 100 35:24:42 h9
26.08 100mi USA2nd Creede 100 39:51:31 h22
08.07 103mi USA9th Silverheels Trail Run - 100mi 34:18:00 h15
03.06 101mi USA3rd Mace's Hideout 100 Mile Race 35:39:44 h18
03.05 125mi USA3rd Cocodona 125 Mile Race 43:58:09 h17
25.03 50mi USA10th Behind the Rocks 50 Mile Race 13:40:15 h61
2022
10.12 55km USA6th Sawmill 55k Race 8:14:00 h22
27.08 100mi USA1st Creede 100 38:25:49 h14
09.07 103mi USA8th Silverheels Trail Run - 100mi 36:22:00 h26
25.06 50mi USA3rd Bears Ears 50mi Ultra Race 13:10:09 h27
04.06 101mi USA2nd Mace's Hideout 100 Mile Race 35:53:31 h14
06.05 100mi USA12th Salt Flats 100 Mile 30:28:33 h34
09.04 60km USA1st Royal Gorge Groove 8:45:12 h11
24.03 100mi USA17th Antelope Island Buffalo Run 100 Mile 27:37:25 h20
2021
11.12 55km USA5th Sawmill 55k Race 9:01:00 h25
20.11 50mi USA7th Dead Horse 50 Mile Race 11:09:20 h151
23.10 50km USA1st Hanging Flume 50km Race 6:48:16 h39
18.09 55km USA1st Golden Bears Ears 55 km Ultra 8:57:59 h6
02.09 53mi USA5th Crested Butte 53 Mile Ultra 12:29:28 h62
06.08 100mi USA6th Silverton Ultra Dirty - 100 Mile Race 39:11:57 h22
24.07 50km USA14th Speedgoat 50k 12:03:12 h215
11.07 50mi USA4th Last Call 50 Miler 15:13:00 h27
26.06 50mi USA2nd Bears Ears 50 Mile Ultra Race 13:10:09 h27
05.06 101mi USA1st Mace's Hideout 100 Mile Race 35:28:40 h15
27.03 50mi USA8th Behind the Rocks 50 Mile Race 11:17:26 h41
2020
01.08 53mi USA6th Sheep Mountain 50 Mile Endurance Run 16:12:00 h41
25.01 50mi USA3rd Arches Ultra 50 Mile Race 9:45:14 h35
2019
16.11 50km USA5th Dead Horse 50 km Race 5:14:26 h74
03.08 100km USA4th Silverton Ultra Dirty - 100K 19:12:06 h19
07.07 50mi USA2nd Last Call 50 Miler 13:48:00 h17
25.05 50km USA14th Jemez Mountain 50km Trail Run 8:56:43 h116
04.05 50km USA1st Cheyenne Mountain Ultra 10x5k Race 4:48:08 h4
07.04 50km USA8th Mountains to Sea Challenge 5:57:05 h24
23.03 50km USA6th Behind the Rocks 50km Race 6:40:33 h122
26.01 50km USA2nd Arches Ultra 50 km Race 5:43:52 h48