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

← Rankings

Derek Kirkman

Men · Americas · provisional rating

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen3561808• new
OverallMen3561806• 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 6, 2024 · 250mi continuouscounts toward rating
place 173 · 4d 20:50:39 · difficulty 2.45 · field 2.43 · quality 0.30
1,789
Canebrake 200 Miler · Mar 26, 2024 · 200mi continuouscounts toward rating
place 17 · 3d 13:37:15 · difficulty 1.00 · field 0.54 · quality 0.59
317
Cocodona 250 Mile Race · May 1, 2023 · 250mi continuous
DNF · 250mi covered · difficulty 2.45 · field 2.44 · quality 1.00
2,095