Predict Arrivals
Tell us where you last saw your runner and we'll estimate when they'll hit each upcoming checkpoint.
Runner History
Look up any runner by name and see their split times at every checkpoint, across every year they've raced.
Explore the Race
Top finishes, finish time distributions, and how the field spreads out over the course of the race.
Compare Runners
Pick up to three races — any runner, any year — and see their splits side by side on one chart and table.
How It Works
Learn how the predictions work and what the shaded bands on the chart mean.