Alexis Davidson
ID 118435
Born : 1955 Cat. M70 Ultrarunner since 2010 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
2
Countries visited ?CANCanadaUSAUnited States
77,5%
Rank quotient ?This runner's calculation uses 60 eligible race(s): Σ(rank − 1) = 3 522; Σ finishers = 4 544. 3 522 / 4 544 × 100 = 77.51%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed60
Km — ultra races3 236 km
Longest race100,0 km
1st Freight Train 100km Trail Run — 14/12/2019

Km per year (ultra races)

106
2 races
2022
224
4 races
2023
414
8 races
2024
110
2 races
2025
103
2 races
2026

Race types (share of distance)

Road66,6%
Trail30,3%
Ult.Walk1,5%
?1,5%

Wins & podiums (ultra)

🏆 Win2
🏆 Win M2
🏅 Top 32
🏅 Top 3 M5
Longest winning streak1
Current streak0

Records

50 km5h42'40100 km13h46'4150 mi10h38'456 h51,06 km12 h82,96 km

HISTORY

60 race(s)
DateRacePerf.Rk
2026
08.08 8h USA14th Sweltering Summer Ultra 8 Hours Run 53.127 km21
01.08 9h USA6th MissionCleanWater (MCW) Westfield 9 Hour Ultra 50.211 km6
2025
09.08 8h USA13h Sweltering Summer Ultra 8 Hours Run 54.267 km23
02.08 9h USA5th MissionCleanWater (MCW) Westfield 9 Hour Ultra 55.361 km4
2024
15.12 8h USA4th Frosty Looper 8 Hour Race 54.318 km102
10.08 8h USA12th Sweltering Summer Ultra 8 Hours Run 55.409 km23
03.08 12h USA6th Loopy Looper 12-Hour Run 54.315 km80
29.06 50km USA11th Catamount Ultra Marathon 8:08:41 h203
15.06 50km CAN31st Niagara Ultra 50 km Walk 6:21:31 h1 🏆
30.03 50km USA25th Chicago Lakefront Spring 50km Race 6:30:15 h50
10.03 50km USA22th USATF National 50K Road Championship Caumsett 6:30:36 h29
07.01 50km USA1st Frozen Flamingo 50K 7:02:32 h38
2023
17.12 8h USA3rd Frosty Looper 8 Hour Race 54.316 km50
12.08 8h USA11th Sweltering Summer Ultra 8 Hours Run 58.837 km21
05.08 12h USA5th Loopy Looper 12-Hour Run 60.350 km56
12.03 50km USA21th USATF National 50K Road Open Race Caumsett 6:43:02 h20
2022
13.08 8h USA10th Sweltering Summer Ultra 8 Hours Run 55.989 km22
22.05 50km USA2nd First State 50 km Trail Race 7:55:51 h77
2021
04.09 50km USA6th Dirty Dozen 50k Trail Run 8:45:19 h20
14.08 8h USA9th Sweltering Summer Ultra 8 Hours Run 50.275 km31
31.07 6h USA9th BUS 6-Hour Pajama Run 45.425 km23
03.07 12h USA2nd Hainesport Hundred 12 Hour Night Endurance Run Summer 82.957 km1 🏆
26.06 50km USA5th Night Train 50k 7:22:13 h94
12.06 50km USA1st First State 50 km Trail Race 7:55:51 h77
08.05 50km USA11th Dirty German Endurance Fest 50 km 8:09:38 h193
2020
14.11 8h USA1st 8 Hours at the Brewery 8 Hour Race 51.499 km34
04.01 6h CAN2nd Stride Inside Indoor Track Race 50.095 km16
2019
21.12 50km USA8th Seth’s Fat Ass 50K 6:35:27 h33
14.12 100km USA1st Freight Train 100km Trail Run 13:46:41 h14
10.08 8h USA7th Sweltering Summer Ultra 8 Hours Run 60.028 km28
27.07 6h USA14th Staten Island 6 hour Ultra race 45.447 km36
22.06 50km USA6th Catamount Ultra Marathon 7:38:01 h140
2018
27.10 50mi USA19th Chicago Lakefront Fall 50 Mile Race 10:38:45 h38
11.08 8h USA6th Sweltering Summer Ultra 8 Hours Run 61.766 km18
28.07 6h USA8th BUS 6-Hour Pajama Run 45.592 km25
14.04 50km USA19th Chicago Lakefront Spring 50km Race 6:26:49 h55
20.01 50km USA7th Go Short, Go Long, Go Very Long 50K 6:30:06 h23
2017
03.12 50km USA5th BUS Trail Mix-Up Run 50K 6:48:52 h47
12.08 8h USA5th Sweltering Summer Ultra 8 Hours Run 58.908 km20
05.08 50km USA7th Kanawha Trace Trail Runs 10:02:38 h79
08.04 50km USA7th Hawkeye 50K Trail Run 6:38:24 h57
2016
19.11 50mi USA54th JFK 50 Mile 12:06:15 h656
06.08 8h USA4th Sweltering Summer Ultra 8 Hours Run 50.329 km41
23.07 8h USA2nd 8-Hour Dream Endurance Race 45.480 km51
13.02 12h USA3rd Jackpot Ultra Running Festival 12 Hour Race 65.215 km12
2014
21.12 50km USA2nd BUS Trail Mix-Up Run 50K 6:37:22 h33
15.11 60km USA34th NYRR Knickerbocker 60K 7:26:55 h238
09.11 6h USA6th Rhode Island 6 Hour Ultra 47.815 km40
26.07 6h USA4th BUS 6-Hour Pajama Run 46.739 km24
02.03 50km USA12th Caumsett Park 50K Lloyd Neck 5:59:52 h52
25.01 50km USA3rd Go Short, Go Long, Go Very Long 50K 6:24:51 h29
2013
10.12 50km USA3rd NYC Staten Island Trail Festival 50K 7:31:09 h62
27.07 50km USA7th Great Cranberry Island 50K Ultra 6:06:26 h96
06.04 6h USA3rd BUS 6-Hour Run 50.568 km27
03.03 50km USA11th Caumsett Park 50K Lloyd Neck - Open Race 5:55:13 h58
2012
22.12 50km USA1st BUS Trail Mix-Up Run 50K 5:55:15 h28
31.03 6h USA2nd BUS 6-Hour Run 48.960 km31
04.03 50km USA10th Caumsett Park 50K Lloyd Neck 5:50:27 h94
2011
29.10 6h USA6th The Equalizer 6 Hour Run 51.064 km4
2010
07.03 50km USA8th Caumsett Park 50K Lloyd Neck 5:42:40 h78