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

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Sam Bosworth

Men · Americas · provisional rating

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen1,047462• new
OverallMen1,047462• 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)

Arizona Monster 300 · Apr 4, 2025 · 304mi continuouscounts toward rating
DNF · 304mi covered · difficulty 2.20 · field 2.26 · quality 1.00
1,743
Moab 240 Endurance Run · Oct 11, 2024 · 240mi continuouscounts toward rating
place 87 · 4d 13:36:30 · difficulty 1.95 · field 2.04 · quality 0.44
1,747
Moab 240 Endurance Run · Oct 13, 2023 · 240mi continuouscounts toward rating
DNF · 240mi covered · difficulty 1.95 · field 1.74 · quality 1.00
1,189
Tahoe 200 Mile Endurance Run · Jul 21, 2023 · 200mi continuous
place 77 · 4d 01:00:52 · difficulty 2.35 · field 1.59 · quality 0.45
1,688
Bigfoot 200 Endurance Run · Aug 12, 2022 · 200mi continuous
place 91 · 4d 05:05:13 · difficulty 2.65 · field 2.08 · quality 0.36
1,954