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

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David Adams

Men · Americas

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen812688• new
OverallMen812688• 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)

The Mammoth 200 · Sep 26, 2025 · 208mi continuouscounts toward rating
DNF · 208mi covered · difficulty 1.01 · field 2.07 · quality 1.00
734
Arizona Monster 300 · Apr 4, 2025 · 304mi continuouscounts toward rating
DNF · 304mi covered · difficulty 2.20 · field 2.26 · quality 1.00
1,743
Cocodona 250 Mile Race · May 1, 2023 · 250mi continuous
DNF · 250mi covered · difficulty 2.45 · field 2.44 · quality 1.00
2,095
Cocodona 250 Mile Race · May 2, 2022 · 250mi continuous
place 143 · 5d 00:28:23 · difficulty 2.45 · field 2.18 · quality 0.28
1,496