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

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Robby Chaney

Men · Americas

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1,738151• new
OverallMen1,738151• 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)

Cocodona 250 Mile Race · May 4, 2026 · 250mi continuous
place 266 · 5d 04:35:58 · difficulty 2.45 · field 2.30 · quality 0.24
1,343
Arizona Monster 300 · Mar 27, 2026 · 304mi continuouscounts toward rating
place 70 · 6d 22:56:46 · difficulty 2.20 · field 2.45 · quality 0.28
1,529
Bigfoot 200 Endurance Run · Aug 8, 2025 · 200mi continuous
place 159 · 4d 10:32:08 · difficulty 2.65 · field 2.50 · quality 0.21
1,408
Tahoe 200 Mile Endurance Run · Jun 13, 2025 · 200mi continuouscounts toward rating
place 161 · 4d 07:26:31 · difficulty 2.35 · field 2.32 · quality 0.30
1,619
Cocodona 250 Mile Race · May 5, 2025 · 250mi continuouscounts toward rating
DNF · 250mi covered · difficulty 2.45 · field 2.43 · quality 1.00
2,085
Arizona Monster 300 · Apr 4, 2025 · 304mi continuous
place 191 · 6d 21:10:33 · difficulty 2.20 · field 2.26 · quality 0.31
1,556
Cocodona 250 Mile Race · May 6, 2024 · 250mi continuous
place 203 · 5d 04:17:23 · difficulty 2.45 · field 2.43 · quality 0.27
1,600