Frederick McKenzie
ID 297461
Born : 1958 Cat. M65 Ultrarunner since 1981 RSA
29
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
43
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 ?RSASouth Africa
41,1%
Rank quotient ?This runner's calculation uses 29 eligible race(s): Σ(rank − 1) = 97 351; Σ finishers = 236 765. 97 351 / 236 765 × 100 = 41.12%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed29
Km — ultra races2 299 km
> 100 km3
> 160 km1
> 24h1
Longest race161,2 km
2nd Capital Classic 24 hour — 19/9/2014

Km per year (ultra races)

90
1 race
2022
87
1 race
2023
143
2 races
2024
90
1 race
2025
2026

Race types (share of distance)

Road100,0%

Records

12 h106,75 km24 h161,20 km

HISTORY

30 race(s) · 4 split(s) nested
DateRacePerf.Rk
2025
08.06 90km RSA98th Comrades Marathon - Down Run 11:34:06 h14445
2024
09.06 87km RSA97th Comrades Marathon - Up Run 10:54:58 h10727
13.04 56km RSA54th Two Oceans Marathon 6:04:35 h5614
2023
11.06 87km RSA96th Comrades Marathon - Down Run 10:21:45 h7491
2022
28.08 90km RSA95th Comrades Marathon - Down Run 10:35:05 h5792
2019
09.06 87km RSA94th Comrades Marathon - Up Run 9:52:59 h5307
20.04 56km RSA50th Two Oceans Marathon 5:41:21 h3241
2018
10.06 90km RSA93rd Comrades Marathon - Down Run 9:51:59 h5196
31.03 56km RSA49th Two Oceans Marathon 5:46:38 h3245
2017
04.06 87km RSA92nd Comrades Marathon - Up Run 11:08:53 h8911
15.04 56km RSA48th Two Oceans Marathon 5:27:13 h2281
2016
29.05 89km RSA91st Comrades Marathon - Down Run 10:22:51 h6253
2015
31.05 87km RSA90th Comrades Marathon - Up Run 10:22:10 h4751
11.04 52km RSA50th Arthur Cresswell Memorial Marathon Bergville to Ladysmith 5:08:35 h223
2014
19.09 24h RSA2nd Capital Classic 24 hour 161.200 km10
26.07 12h RSA19th Longest Day 12 Hour Track Race 106.752 km4
01.06 89km RSA89th Comrades Marathon - Down Run 9:20:42 h2735
12.04 52km RSA49th Arthur Cresswell Memorial Marathon Bergville to Ladysmith 4:58:39 h169
2013
27.07 12h RSA18th Longest Day 12 Hour Track Race 101.360 km6
13.04 52km RSA48th Arthur Cresswell Memorial Marathon Bergville to Ladysmith 4:54:51 h168
2012
03.06 89km road race RSA87th Comrades Marathon - Down Run 9:17:21 h2988
2011
23.04 50km road race RSA42nd Two Oceans Marathon - 50km Split 4:29:51 h1350
2010
04.10 52km RSA45th Arthur Cresswell Memorial Marathon Bergville to Ladysmith 4:58:59 h127
1988
31.05 87km RSA63rd Comrades Marathon - Up Run 8:28:25 h2229
1984
01.06 90km RSA59th Comrades Marathon - Down Run 7:33:30 h981
21.04 56km RSA15th Two Oceans Marathon 3:51:47 h150
1983
02.04 56km RSA14th Two Oceans Marathon 4:13:04 h394
1982
31.05 91km RSA57th Comrades Marathon - Down Run 8:32:40 h1455
10.04 56km RSA13th Two Oceans Marathon 4:12:59 h356
1981
01.06 90km RSA56th Comrades Marathon - Up Run 9:35:36 h2131