Progression
See how Mason is progressing
Every mark Mason has run, plotted over time — watch times drop race by race, catch breakout performances, and compare season to season for every event.
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Castle View High School Class of 2027 Castle Rock, CO
Progression
Every mark Mason has run, plotted over time — watch times drop race by race, catch breakout performances, and compare season to season for every event.
Join MileSplit PRO Already a PRO member? Log in