Running Trends

How your running is going over the last twelve weeks, built from the runs you have already logged or imported. There is nothing to set up.

Where to find it

• Mobile: Exercise Statistics → Cardio, at the top of the list.
• Web: Reports → Exercise → Cardio, above the session list.

It appears once you have at least one run in the last twelve weeks.

What it shows

• This week. The distance you have run so far this week, and how it compares with the average of the four weeks before it. Weeks begin on your first day of the week (Settings → Preferences → Start Day of the Week), Monday if you have not set one.
• A bar per week. Twelve bars, oldest to newest, with the current week highlighted.
• Longest run. Your longest single run in the twelve weeks.
• Efficiency. How far you run per heartbeat. It compares your earlier weeks with your recent ones on runs of 20 minutes or more that have a heart rate. A positive figure means you cover more ground for the same effort, which is a sign of improving fitness. It needs at least two weeks with a heart rate in each half of the window, and shows a dash until then.
• Race time estimates. Estimated 5K, 10K, half marathon and marathon times, worked out from your running personal records. A distance you already hold a record for shows that record. Otherwise the estimate scales your nearest-distance record using Riegel's formula (time × (distance ÷ record distance)^1.06). It does not estimate a distance more than eight times longer than your longest-fitting record, so a 5K record gives 10K and half marathon estimates but no marathon.

Estimates are a guide, not a promise. They run optimistic for distances you have not trained for, and heat, hills and a bad day are not in the formula.

Only runs count. Walks, rides, hikes and gym cardio are left out, and so are runs with no distance. Distances use your kilometer or mile setting. The runs can come from anywhere: recorded in SparkyFitness, or imported from Apple Health, Garmin, Strava and the others.