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

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Ken Peralez

Men · Americas · provisional rating

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen2232476• new
OverallMen2232476• 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)

Cowboy 200 · Sep 26, 2025 · 200mi continuouscounts toward rating
place 29 · 3d 06:15:43 · difficulty 0.95 · field 1.04 · quality 0.39
381
Cowboy 200 · Sep 13, 2024 · 200mi continuouscounts toward rating
place 32 · 3d 06:28:26 · difficulty 0.95 · field 1.17 · quality 0.32
361
Cowboy 200 · Sep 15, 2023 · 200mi continuouscounts toward rating
place 23 · 3d 07:51:18 · difficulty 0.95 · field 0.71 · quality 0.40
270