Isobel (Izzy) Knox
ID 39471
Born : 1978 Cat. W45 Ultrarunner since 2008 GBR
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
38
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
4
Countries visited ?ESPSpainGBRUnited KingdomIRLIrelandSUISwitzerland
28,9%
Rank quotient ?This runner's calculation uses 25 eligible race(s): Σ(rank − 1) = 606; Σ finishers = 2 094. 606 / 2 094 × 100 = 28.94%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed25
Km — ultra races2 066 km
> 100 km2
> 24h1
Longest race153,0 km
31st West Highland Way Race — 20/6/2015

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road69,3%
Trail30,7%

Wins & podiums (ultra)

🏆 Win0
🏆 Win F7
🏅 Top 31
🏅 Top 3 F13
Longest winning streak0
Current streak0

Records

50 km3h55'21100 km8h43'1450 mi7h29'0112 h114,63 km24 h74,22 km

HISTORY

27 race(s) · 3 split(s) nested
DateRacePerf.Rk
2015
20.06 153km GBR31st West Highland Way Race 27:44:50 h97
04.04 55mi GBR7th Glasgow-Edinburgh Ultramarathon 8:09:02 h7
2014
17.08 50mi GBRJohn Lucas Memorial 50 Mile Ultra Run 7:29:01 h7
26.04 53mi GBR9th Highland Fling Race 53 Mile 10:11:21 h112
2013
13.07 40mi GBRClyde Stride – Clyde Walkway Race 6:23:53 h20
31.03 100km GBRSelf Transcendence 100 km Perth 9:13:18 h23
12.01 45mi GBRGB Ultra Country to Capital 6:25:39 h17
2012
15.12 12h ESPLes 12 hores en pista, Barcelona 114.629 km2 🥈
28.10 38mi GBR1st Jedburgh Three Peaks ultramarathon 6:46:57 h11
22.07 100km GBR100 km Redwick - British Championships 9:13:12 h12
22.07 100km GBR100 km Redwick 9:13:12 h13
17.03 33mi GBRD33 – Deeside Way Ultra 4:10:17 h12
2011
07.05 24h SUI23. Self-Transcendence 24h Lauf Basel 74.221 km84
27.03 100km GBR100 km Perth 8:56:15 h28
23.01 50km GBRGloucester Epney 50km 3:56:27 h20
2010
02.10 35mi GBRThe Round Ripon Ultra 35 6:49:33 h7
19.06 50km GBRBoddington 50 km Road Race 4:39:16 h37
19.06 100km GBRBoddington 100 km Road Race 10:19:55 h21
21.03 35.2mi GBRCotswold 35.2 mile road race 4:44:01 h7
2009
19.09 100km GBRCommonwealth Championships 100 km race 9:21:37 h28
10.05 50km GBR13th Fife AC 50km Road Race 3:55:21 h7
28.03 50km IRL100 km Galway - 50km Split 4:01:09 h21
28.03 100km IRL100 km Galway 8:43:14 h22
22.02 35mi GBRDraycote Water 35mi 4:26:20 h11
2008
13.09 50km GBRPerth Ultra Fest 100K Race - 50km Split 4:23:54 h7
13.09 100km GBRPerth Ultra Fest 100K Race 9:33:07 h7
18.05 100km GBR100 km Cardiff 9:40:07 h19