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

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Peter O'brien

Men · Europe · b. 1970 (50-59) · provisional rating

Also seen as: O'Brien, Peter

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen994960• new
OverallMen994952• new

Why this rank

The Overall rating is the time-decayed mean of this athlete’s best 1 in-window performance scores (highlighted below). Each score = base × difficulty × field-strength × quality.

Career results (200+ mile tier)

Spine Race · Jan 14, 2024 · 268mi continuouscounts toward rating
place 67 · 6d 05:37:07 · difficulty 2.20 · field 0.97 · quality 0.27
587