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

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Jeff Browning

Men · Americas · provisional rating

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen2,21661• new
OverallMen2,21661• 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)

Cocodona 250 Mile Race · May 4, 2026 · 250mi continuouscounts toward rating
place 15 · 2d 22:56:04 · difficulty 2.45 · field 2.30 · quality 0.66
3,702
Cocodona 250 Mile Race · May 6, 2024 · 250mi continuouscounts toward rating
place 2 · 2d 12:19:57 · difficulty 2.45 · field 2.43 · quality 0.99
5,878
Moab 240 Endurance Run · Oct 7, 2022 · 240mi continuous
place 1 · 2d 09:27:57 · difficulty 1.95 · field 1.86 · quality 1.00
3,632
Bigfoot 200 Endurance Run · Aug 13, 2021 · 200mi continuous
DNS · 200mi covered · difficulty 2.65 · field 1.87 · quality ?