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

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Chris Fox

Men · Americas · b. 1979 (40-49) · provisional rating

Also seen as: Fox, Chris

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1703260• new
OverallMen1703258• 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)

Last Annual Vol-State 500K Endurance Run · Jul 10, 2025 · 310.69mi continuouscounts toward rating
place 14 · 6d 14:36:21 · difficulty 1.10 · field 0.42 · quality 0.47
218
Southern States 200 · Apr 12, 2024 · 203mi continuouscounts toward rating
place 25 · 3d 22:19:23 · difficulty 1.01 · field 1.70 · quality 0.31
525