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

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Jon Willman

Men · Americas · b. 1985 (40-49)

Also seen as: Willman, Jon

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen4021609• new
OverallMen4021608• 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)

Across the Years (200 Miler) · Dec 28, 2025 · 200mi continuouscounts toward rating
place 4 · 2d 15:42:20 · difficulty 1.00 · field 1.15 · quality 0.59
676
Across the Years 6 days · Dec 28, 2025 · 200mi continuouscounts toward rating
place 4 · 2d 15:42:20 · difficulty 0.90 · field 0.91 · quality 0.59
479