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

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Irene Koesters

Women · Americas · provisional rating

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousWomen751547• new
OverallWomen751541• new

Why this rank

The Overall rating is the time-decayed mean of this athlete’s best 1 in-window performance scores (highlighted below). Each score = base × difficulty × field-strength × quality.

Career results (200+ mile tier)

Tahoe 200 Mile Endurance Run · Jul 21, 2023 · 200mi continuouscounts toward rating
DNF · 200mi covered · difficulty 2.35 · field 1.59 · quality 1.00
1,307
Cocodona 250 Mile Race · May 2, 2022 · 250mi continuous
place 114 · 4d 21:02:00 · difficulty 2.45 · field 2.18 · quality 0.30
1,576
Bigfoot 200 Endurance Run · Aug 13, 2021 · 200mi continuous
place 102 · 4d 09:25:26 · difficulty 2.65 · field 1.87 · quality 0.34
1,690