John Rex
ID 494083
Born : 1947 Cat. M75 Ultrarunner since 1975 RSA
12
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
27
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
60,4%
Rank quotient ?This runner's calculation uses 12 eligible race(s): Σ(rank − 1) = 27 005; Σ finishers = 44 742. 27 005 / 44 742 × 100 = 60.36%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed12
Km — ultra races777 km
> 100 km1
> 160 km1
Longest race160,9 km
6th Washie 100 Miler — 9/7/1982

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road100,0%

Records

100 mi22h10'24

HISTORY

12 race(s)
DateRacePerf.Rk
1994
02.04 56km RSA25th Two Oceans Marathon 5:58:44 h6993
1991
30.03 56km RSA22nd Two Oceans Marathon 5:44:02 h5249
1990
14.04 56km RSA21st Two Oceans Marathon 5:36:21 h5029
1989
25.03 56km RSA20th Two Oceans Marathon 5:43:20 h4480
1987
18.04 56km RSA18th Two Oceans Marathon 4:47:32 h1502
1986
29.03 56km RSA17th Two Oceans Marathon 4:40:15 h1347
1984
21.04 56km RSA15th Two Oceans Marathon 4:30:46 h822
1982
09.07 100mi RSA6th Washie 100 Miler 22:10:24 h57
10.04 56km RSA13th Two Oceans Marathon 4:35:04 h689
1980
05.04 56km RSA11th Two Oceans Marathon 4:32:44 h464
1979
14.04 56km RSA10th Two Oceans Marathon 4:31:31 h312
1975
12.04 56km RSA6th Two Oceans Marathon 4:15:24 h73