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

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Karlotta Osk Oskarsdottir

Women · ISL · b. 1979 (40-49)

Also seen as: Oskarsdottir, Karlotta Osk

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousWomen1121095• new
OverallWomen1141082• new
Multi-day / TimedWomen4922• 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)

Gotland Run 511k · Jul 5, 2025 · 317.52mi continuouscounts toward rating
place 15 · 7d 13:10:00 · difficulty 1.14 · field 0.51 · quality 0.37
211
South Wales 200 · May 22, 2024 · 200mi continuouscounts toward rating
place 34 · 4d 09:14:00 · difficulty 1.00 · field 0.41 · quality 0.36
146
(race) · · ?mi
place 10 · · difficulty ? · field ? · quality 0.53
42
(race) · · ?mi counts toward rating
place 25 · · difficulty ? · field ? · quality 0.68
55