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

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Jason Corbett

Men · Americas

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1,275332• new
OverallMen1,275332• 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)

Moab 240 Endurance Run · Oct 10, 2025 · 240mi continuouscounts toward rating
place 96 · 4d 11:49:37 · difficulty 1.95 · field 2.31 · quality 0.34
1,510
Arizona Monster 300 · Apr 4, 2025 · 304mi continuouscounts toward rating
place 77 · 5d 10:09:36 · difficulty 2.20 · field 2.26 · quality 0.48
2,389
Cocodona 250 Mile Race · May 1, 2023 · 250mi continuous
place 127 · 4d 23:06:37 · difficulty 2.45 · field 2.44 · quality 0.38
2,281