Joseph Anthony D'Alessio Davidson
ID 62090
Born : 1976 Cat. M50 Ultrarunner since 2007 USA
41
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
58
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
6
Countries visited ?ANDAndorraCANCanadaFRAFranceITAItalySUISwitzerlandUSAUnited States
29,5%
Rank quotient ?This runner's calculation uses 41 eligible race(s): Σ(rank − 1) = 4 174; Σ finishers = 14 168. 4 174 / 14 168 × 100 = 29.46%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed41
Km — ultra races5 083 km
> 100 km21
> 160 km16
> 200 km3
Longest race330,0 km
15° TOR330 - Tor des Géants — 8/9/2024

Km per year (ultra races)

2022
300
3 races
2023
491
2 races
2024
274
2 races
2025
105
1 race
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 33
🏅 Top 3 M3
Longest winning streak0
Current streak0

Records

50 km4h06'01100 km9h07'0250 mi6h33'23100 mi21h28'18

HISTORY

41 race(s)
DateRacePerf.Rk
2026
13.06 105km AND6ème Trail 100 Andorra by UTMB - Ultra 105K 28:41:43 h314
2025
29.08 174km FRA22ème Ultra Trail Tour du Mont Blanc 41:57:26 h934
11.07 100km ITA13° Gran Trail Courmayeur 100 km 23:12:16 h106
2024
08.09 330km ITA15° TOR330 - Tor des Géants 5d 00:06:59 h119
19.07 100mi USA26th Cascade Crest Classic 100 Mile 27:26:08 h39
2023
18.11 50mi USA61st JFK 50 Mile 8:55:06 h193
07.07 100km ITA11° Gran Trail Courmayeur 100 km 22:29:35 h70
23.06 120km ITA16^ Lavaredo Ultra Trail by UTMB - 120K 23:23:33 h692
2021
12.09 330km ITA12° Tor des Géants - 330 km Endurance Trail della Valle d'Aosta 5d 02:45:26 h144
14.05 106mi USA9th Cruel Jewel 100 Mile 33:10:56 h42
2019
30.08 171km FRA17ème Ultra Trail Tour du Mont Blanc 38:17:39 h530
26.07 100mi USA3rd High Lonesome 100 Mile 34:44:13 h70
22.06 50km USA6th Catamount Ultra Marathon 4:55:34 h24
01.06 100mi USA41st Old Dominion 100 Mile Endurance Run 23:39:59 h29
2018
09.09 330km ITA9° Tor des Géants - 330 km Endurance Trail della Valle d'Aosta 5d 09:42:58 h236
15.06 100mi USA26th Bighorn Mountain Wild & Scenic 100 Mile Trail Run 29:42:07 h64
2017
29.09 100mi USA19th The Bear 100 Mile Endurance Run 27:21:24 h55
15.07 101km SUI5. Eiger Ultra Trail 101 km 17:29:51 h142
16.06 100mi USA25th Bighorn Mountain Wild & Scenic 100 Mile Trail Run 29:29:49 h60
06.05 100km USA22nd Miwok 100k Trail Race 11:45:24 h45
2016
05.11 100mi USA9th Pinhoti 100 Mile 22:27:13 h17
23.09 100mi USA18th The Bear 100 Mile Endurance Run 24:21:35 h22
12.08 120mi CAN7th Fat Dog 120 Mile Trail Race 35:21:00 h25
11.06 70.5mi USA37th Laurel Highlands 70 Mile Ultra 13:37:41 h5
30.04 50km USA9th Endurance Challenge - New York Trail 50 km 5:15:50 h34
2015
13.06 70.5mi USA36th Laurel Highlands 70 Mile Ultra 13:32:37 h3 🥉
25.04 50km USA5th TARC Spring Classic 50 km 4:27:10 h4
2009
27.06 100mi USA36th Western States 100 Mile Endurance Run 21:28:18 h29
31.05 50km USA22nd Ohlone 50K Wilderness Run 4:59:02 h3 🥉
02.05 100km USA14th Miwok 100k Trail race 9:07:02 h5
04.04 50mi USA30th American River 50 Mile Endurance Run 6:33:23 h11
14.03 50km USA20th Way Too Cool 50K Endurance Run 4:06:01 h18
17.01 50km USA6th Pacifica 50 km Trail Run - Winter Edition 5:02:10 h4
2008
06.12 50mi USA2nd Endurance Challenge - California Trail 50 Mile 9:07:29 h30
08.06 50km USA8th Mount Diablo 50K 5:16:06 h4
10.05 50mi USA25th Quicksilver 50 Mile Endurance Run 7:43:28 h7
27.04 50km USA7th Big Basin Redwoods Trail Run 6:03:33 h8
05.04 50mi USA29th American River 50 Mile Endurance Run 7:12:05 h22
22.03 50km USA4th Rucky Chucky Roundabout 50K 4:50:18 h2 🥈
08.03 50km USA19th Way Too Cool 50K Endurance Run 4:12:00 h45
2007
21.07 50mi USA6th Tahoe Rim Trail 50M Endurance Runs 9:39:59 h9