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

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Chris Prairie

Men · Americas · provisional rating

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen4451522• new
OverallMen4451522• new

Why this rank

The Overall rating is the time-decayed mean of this athlete’s best 2 in-window performance scores (highlighted below). Each score = base × difficulty × field-strength × quality.

Career results (200+ mile tier)

Southern States 200 · Mar 19, 2025 · 203mi continuouscounts toward rating
DNF · 203mi covered · difficulty 1.01 · field 0.87 · quality 1.00
306
Cocodona 250 Mile Race · May 6, 2024 · 250mi continuouscounts toward rating
place 121 · 4d 12:53:10 · difficulty 2.45 · field 2.43 · quality 0.34
2,031