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

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William Henry

Men · Americas

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen2,37144• new
OverallMen2,37144• new

Why this rank

The Overall rating is the time-decayed mean of this athlete’s best 3 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 31 · 3d 23:45:40 · difficulty 1.95 · field 2.31 · quality 0.42
1,869
Bigfoot 200 Endurance Run · Aug 8, 2025 · 200mi continuouscounts toward rating
DNF · 200mi covered · difficulty 2.65 · field 2.50 · quality 1.00
2,319
Tahoe 200 Mile Endurance Run · Jun 13, 2025 · 200mi continuouscounts toward rating
place 20 · 3d 02:28:21 · difficulty 2.35 · field 2.32 · quality 0.54
2,925
Arizona Monster 300 · Apr 4, 2025 · 304mi continuous
DNF · 304mi covered · difficulty 2.20 · field 2.26 · quality 1.00
1,743