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

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Seiko Hasegawa

Women · Asia · b. 1967 (50-59)

Also seen as: Hasegawa, Seiko

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousWomen135959• new
OverallWomen135959• new
Multi-day / TimedWomen36179• 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)

(race) · · ?mi
place 27 · 2d 02:30:09 · difficulty ? · field ? · quality 0.36
89
(race) · · ?mi
place 21 · 1d 21:51:49 · difficulty ? · field ? · quality 0.40
99
(race) · · ?mi counts toward rating
place 2 · 2d 01:20:51 · difficulty ? · field ? · quality 0.67
161
(race) · · ?mi
place 13 · 1d 21:33:09 · difficulty ? · field ? · quality 0.66
162
(race) · · ?mi
place 33 · 2d 01:39:19 · difficulty ? · field ? · quality 0.56
137
(race) · · ?mi counts toward rating
place 20 · 1d 13:07:45 · difficulty ? · field ? · quality 0.56
137
(race) · · ?mi counts toward rating
place 6 · 1d 16:15:27 · difficulty ? · field ? · quality 0.66
160
(race) · · ?mi
place 15 · · difficulty ? · field ? · quality 0.22
18