Share your race predictions

We need your help understanding how well predictions stack up against actual race times. Tell us what Strava, Garmin, or other predictors said you'd run—and what you actually ran. As a thank you, we'll share some nifty stickers with you and a final report once we're done.

Prediction results

Give us these.

Get these.

Log into Kailo to select your race. After connecting, you'll have access to your historical data from Garmin and Strava.

Race 1

1 How would you like to enter your race?

Loading activities...

No matching activities found

2 Verify your race information

We've pulled this data from your connected activities. Click the edit icon to make changes.

When was your race?

What distance did you run?

What was your finish time?

2 When was your race?

3 What distance did you run?

4 What was your finish time?

: :

3 How did the race go? optional

4 What predictions did you receive?

Add each prediction you received. Screenshots are required for swag.

PREDICTION

Don't remember your prediction? Pick a source and we'll help you find it.

How to find predictions

Video tutorials:

▶️ Strava ▶️ Garmin

Example screenshots:

📱 Strava 📱 Garmin

What you're looking for

Swipe for instructions

What you're looking for

Source: —

WHAT WAS THE PREDICTED TIME?

: :

UPLOAD YOUR SCREENSHOT

Screenshots earn you stickers and help verify your data.

I agree that my data (anonymized) can be included in an aggregated analysis and public release of prediction accuracy results. Include my raw anonymized results in the public data table on the statistics page.

Signup

Enter your email to create an account, then connect with Strava to verify your race data.

Email Address

We'll sync your Strava activities to automatically verify your race times.

Enter Your Password

Please enter your password to continue.

Password

By continuing, you agree to our Terms of Use and Privacy Policy

How Accurate Are Race Predictors?

Some race predictors are better than others. But by how much? And are any truly reliable?

Share your race data to help answer these questions and shed light on the accuracy of predictions from Garmin, Strava, and other platforms.

Step 1

How It Works

Find a recent race

Find a recent race where you had a prediction from Garmin, Strava, or another platform.

Take a screenshot

Capture the prediction from the day before your race. This is your proof!

Share the prediction and race time

Tell us your actual time and upload your screenshot. We make it easy to search your Strava activities.

Step 2

Earn Cool Swag

For each unique race distance and predictor combination, you'll receive some cool race-related swag!

1 Your first prediction submission

+3 Multiple race distances

+1 Multiple prediction sources (Garmin + Strava)

Step 3

Choose How to Submit

There are two ways to share your race data:

🔗

Select from Strava/Garmin (recommended)

Log in and pick your race from your activities. We'll auto-fill the date and finish time. It's a little extra setup, but you'll earn a sticker, get full dashboard access, and your data will be verified for our upcoming report.

Manual entry: Quick to start — just enter your race details directly. We greatly appreciate your contribution, however, becuase we can't verify the time, it may not be included in our final verified report, and you'll only have temporary access to the dashboard.

Step 4

Get Results & Swag

See results as they come in! Check out our live dashboard to see unverified results in real-time as submissions roll in.

We vet predictions for accuracy, and run baseline methods like the Tanda method on linked data to glean even more insights

We share the verified public results so everyone can benefit

Your swag arrives in the mail!