Predict your marathon race time
RacePredictions analyzes and stores a history of predictions based on your Strava runs.


Here's how it works


Sign up and create an account for free - no strings attached. Once you've signed up you can connect to your Strava account. Import your runs and we'll create your race predictions! You're free to continue importing your predictions - we'll track your trends over time.

RacePredictions does more than just base the predicted time on the total time and distance of the run. We search for the fastest sub-segments within each run to give the most accurate prediction. This site currently uses the Riegel formula for calculating estimated race times.