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

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Alexander Mackay

Men · Americas

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1,193372• new
OverallMen1,193372• 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)

Arizona Monster 300 · Mar 27, 2026 · 304mi continuouscounts toward rating
place 44 · 6d 02:35:31 · difficulty 2.20 · field 2.45 · quality 0.36
1,932
Moab 240 Endurance Run · Oct 10, 2025 · 240mi continuouscounts toward rating
place 64 · 4d 08:32:04 · difficulty 1.95 · field 2.31 · quality 0.35
1,597