Johnson Power Rankings
The world authority on 200+ mile ultramarathon running — weekly, data-driven, course-difficulty-adjusted.

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Jim Cook

Men · Americas · b. 1965 (60-69)

Also seen as: Cook, Jim

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen845703• new
OverallMen815930• new
Multi-day / TimedMen4793• new

Why this rank

The Overall rating is the time-decayed mean of this athlete’s best 3 in-window performance scores (highlighted below). Each score = base × difficulty × field-strength × quality.

Career results (200+ mile tier)

Last Annual Vol-State 500K Endurance Run · Jul 10, 2025 · 310.69mi continuouscounts toward rating
place 19 · 7d 01:57:48 · difficulty 1.10 · field 0.42 · quality 0.42
193
Last Annual Vol-State 500K Endurance Run · Jul 13, 2023 · 310.69mi continuouscounts toward rating
place 45 · 7d 10:10:58 · difficulty 1.10 · field 0.40 · quality 0.29
128
Last Annual Vol-State 500K Endurance Run · Jul 14, 2022 · 310.69mi continuous
place 56 · 8d 06:54:21 · difficulty 1.10 · field 0.63 · quality 0.25
173
(race) · · ?mi counts toward rating
place 6 · · difficulty ? · field ? · quality 0.50
40