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

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Mark Chase

Men · Europe · b. 1985 (40-49) · provisional rating

Also seen as: Chase, Mark

Ratings

Athlete ratings by board
BoardGenderRatingRankMove
ContinuousMen776757• new
OverallMen776756• 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)

Moab 240 Endurance Run · Oct 10, 2025 · 240mi continuouscounts toward rating
DNF · 240mi covered · difficulty 1.95 · field 2.31 · quality 1.00
1,576
TOR330 - Tor des Géants · Sep 8, 2024 · 205.05mi continuouscounts toward rating
place 75 · 4d 14:15:04 · difficulty 2.65 · field 0.92 · quality 0.43
1,057