Runna says its plans are not created by AI. Experienced coaches design them, and an algorithm then tailors and adapts them to each runner’s progress, feedback and performance. Runna also has a feature called Runna AI, which runners can use to review pace adjustments over time.

How does Runna adjust your paces?

Runna may change your pace targets if you repeatedly miss or beat them across your workouts, even if you hit them in your latest session. It ignores outlier reps. Your estimated race time sets the paces for every workout, and you can change it at any point in the plan.