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

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James Nalley

Men · Americas

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1,731154• new
OverallMen1,731154• 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 57 · 4d 06:46:00 · difficulty 1.95 · field 2.31 · quality 0.37
1,646
Cocodona 250 Mile Race · May 5, 2025 · 250mi continuouscounts toward rating
place 45 · 4d 02:04:42 · difficulty 2.45 · field 2.43 · quality 0.40
2,371
Tahoe 200 Mile Endurance Run · Jun 14, 2024 · 200mi continuouscounts toward rating
place 53 · 3d 10:38:06 · difficulty 2.35 · field 2.02 · quality 0.46
2,194
Moab 240 Endurance Run · Oct 13, 2023 · 240mi continuous
place 25 · 3d 21:44:00 · difficulty 1.95 · field 1.74 · quality 0.60
2,051
Bigfoot 200 Endurance Run · Aug 12, 2022 · 200mi continuous
place 27 · 3d 10:36:06 · difficulty 2.65 · field 2.08 · quality 0.51
2,810