PaceX: Running Pace Calculator

Set a finish time.
Train at the pace to reach it.

A focused training companion for understanding pace, setting a race goal, and knowing the next useful number before you run.

iPhone, Watch & widgetsRace planningTraining insights

Run with a plan

Goal pace, race predictions, and training zones for your next start line.

PaceX turns a goal into a practical pace, then keeps race prediction, remaining pace, and training zones within reach.

Translate a finish-time ambition into a pace you can take to the road. Try the free running pace calculator.

Explore the relationship between today’s effort and the next start line.

Make the effort behind each run understandable, not abstract.

Keep the next useful pace and finish-time number close when it matters.

FAQ

What does PaceX help me plan?

It helps you turn a race goal into a practical pace, estimate race outcomes, and make training zones easier to understand.

Where can I use PaceX?

PaceX is built for iPhone, Apple Watch, and widgets - so useful race-planning numbers are close before you run.

Which race distances can I plan for?

Use PaceX to think through pace and finish-time goals for short races, long races, and the distance you are training toward.

How does goal pace help my training?

Start with the finish time you want, then use the corresponding pace to make the work between now and race day more concrete.

Is PaceX useful on race day?

Yes. PaceX keeps pace and finish-time planning tools available on iPhone, Apple Watch, and widgets.