William Barkan
ID 1001464
Born : 1983 Cat. M40 Ultrarunner since 2017 USA
28
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
40
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
56,7%
Rank quotient ?This runner's calculation uses 28 eligible race(s): Σ(rank − 1) = 2 661; Σ finishers = 4 695. 2 661 / 4 695 × 100 = 56.68%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed28
Km — ultra races2 180 km
> 100 km3
> 160 km3
Longest race160,9 km
27th The Bear 100 Mile Endurance Run — 26/9/2025

Km per year (ultra races)

148
2 races
2022
276
4 races
2023
250
4 races
2024
322
3 races
2025
151
2 races
2026

Race types (share of distance)

Trail100,0%

Records

50 km4h59'19100 km14h18'5350 mi10h01'49100 mi30h44'35

HISTORY

28 race(s)
DateRacePerf.Rk
2026
15.08 31.5mi USA25th Tamalpa Headlands 50K 7:15:26 h161
21.03 100km USA3rd The Big Alta 15:14:15 h168
2025
26.09 100mi USA27th The Bear 100 Mile Endurance Run 34:10:45 h200
17.05 50mi USA29th Bishop High Sierra Ultramarathons 50 Miles 12:56:24 h22
08.03 50mi USA13th Marin Ultra Challenge 50 Mile Race 11:09:17 h53
2024
16.11 50km USA12th Mt. Tam Trail Run 6:55:50 h79
27.04 100km USA11th The Canyons Endurance 100 km Run 17:27:54 h277
02.03 50km USA3rd North Marin Ridge 50km Run 6:44:30 h11
06.01 50km USA3rd No Hands Trail Run 7:34:20 h31
2023
25.11 28mi USA38th Quad Dipsea Trail Run 6:51:02 h196
05.08 100km USA22nd Waldo 100K Trail Run 17:46:25 h89
03.06 50mi USA11th Marin Ultra Challenge 50 Mile Race 11:47:45 h62
18.02 50km USA2nd North Marin Ridge 50km Run 6:08:32 h15
2022
18.06 48km USA7th The Broken Arrow Skyrace 10:05:58 h390
07.05 100km USA25th Miwok 100k Trail Race 14:38:04 h161
2021
17.09 100mi USA15th Run Rabbit Run 100 Mile UltraMarathon - Tortoises Run 34:14:12 h131
24.04 100km USA8th The Canyons Endurance 100 km Run 16:13:06 h155
2019
21.12 50km USA8th Woodside Ramble 50K - Winter 5:25:56 h23
20.07 100mi USA18th Tahoe Rim Trail 100M Endurance Run 30:44:35 h75
19.05 50km USA32nd Ohlone 50K Wilderness Run 8:03:46 h60
13.04 50mi USA11th Lake Sonoma 50 Mile Race 10:55:35 h133
09.03 50km USA8th Marin Ultra Challenge 50 km Race 4:59:19 h19
2018
06.10 50mi USA36th Dick Collins Firetrails 50 Mile 10:01:49 h12
25.08 31.5mi USA19th Tamalpa Headlands 50K 6:15:35 h37
05.08 50km USA8th Crystal Springs 50 km Summer Trail Run 6:05:23 h10
15.07 50km USA5th SPASM Lake Chabot 50 km 5:16:27 h12
03.02 100km USA5th Ordnance 100K 14:18:53 h23
2017
26.08 31.5mi USA18th Tamalpa Headlands 50K 7:30:39 h84