John Cookson
ID 66858
Born : 1946 Cat. M80 Ultrarunner since 1987 CAN
23
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
47
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
45,6%
Rank quotient ?This runner's calculation uses 23 eligible race(s): Σ(rank − 1) = 874; Σ finishers = 1 917. 874 / 1 917 × 100 = 45.59%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed23
Km — ultra races2 458 km
> 100 km6
> 160 km5
> 200 km1
> 24h4
Longest race663,0 km
1st Sri Chinmoy 10 Day Race — 25/4/1996

Km per year (ultra races)

2022
2023
2024
2025
2026

Race types (share of distance)

Road74,7%
Trail25,3%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 31
🏅 Top 3 M1
Longest winning streak0
Current streak0

Records

50 km4h35'37100 km11h26'2150 mi9h19'13100 mi26h37'146 h57,38 km24 h170,43 km

HISTORY

24 race(s) · 15 split(s) nested
DateRacePerf.Rk
2001
21.04 50km CAN1st Toronto Ultra Race 50km 6:48:35 h41
1998
06.06 50km CAN6th Self Transcendence 6 Hour Run Kingston - 50km Split 5:55:30 h40
06.06 6h CAN6th Self Transcendence 6 Hour Run Kingston 50.180 km40
25.04 50km CAN3rd Ganaraska 50 km Trail Run 6:47:08 h29
04.04 50km CAN3rd Ascension 50 km Run 5:36:37 h30
1997
22.11 50mi USA35th JFK 50 Mile 9:19:13 h174
11.10 50km CAN6th Slough Of Despond 50 km Road Race 5:03:43 h26
13.09 24h CAN17th Self-Transcendence 24 Hour Race Ottawa 170.425 km2 🥈
30.08 100mi CAN2nd Haliburton Forest 100 Mile Race 26:37:14 h6
28.06 100km CAN5th Niagara Ultra 100 km 12:53:08 h16
07.06 6h CAN5th Self Transcendence 6 Hour Run Kingston 56.411 km16
24.05 50km CAN5th Sulphur Springs Trail Run 50km 5:10:44 h23
26.04 50km CAN2nd Ganaraska 50 km Trail Run 6:25:24 h23
22.02 6h CAN2nd Ascension Six Hour Run 57.380 km6
1996
14.09 24h CAN16th Self-Transcendence 24 Hour Race Ottawa 164.912 km7
29.06 100km CAN4th Niagara Ultra 100 km 11:26:21 h17
08.06 6h CAN4th Self Transcendence 6 Hour Run Kingston 55.082 km10
25.05 50km CAN4th Sulphur Springs Trail Run 50km 6:05:22 h39
25.04 10d USA1st Sri Chinmoy 10 Day Race 663.049 km17
1995
18.11 50mi USA33rd JFK 50 Mile 11:09:51 h305
1993
18.09 24h CAN13th Self-Transcendence 24 Hour Race Ottawa 105.382 km36
1992
12.09 24h CAN12th Self-Transcendence 24 Hour Race Ottawa 162.870 km12
1988
04.09 50km CANPatenauge's choise 50 km 4:35:37 h8
1987
06.09 50km CANPatenauge's choise 50 km 5:03:10 h14