How to use the speed calculator

Type a pace, a distance or a time, and everything else is worked out straight away.

Step by step

1. On the home screen, tap Speed Calculator in the grid.
2. There's no calculate button. Type in any box: km/h, mph, min/km, min/mi, or a race finish time.
3. Every other box updates straight away.
4. Type your goal marathon time and you'll see the exact pace it needs, in km and miles.
5. Look at the breakdown table. It splits the race into every km, mile, 5K or a custom distance, at your pace.
6. Tap + Add distance to add your own races.
7. Tap Edit to rearrange the screen: hide boxes you never use and drag them into order. Reset puts it all back.
8. Tap Ask Deep Coach to ask about this exact pace and race, such as headwind, hills or fuelling.
9. Tap Save conversation to keep the whole setup and come back to it later.

Try this

Where it goes wrong

• Treating it as a predictor. It's a pace calculator, not a fortune teller. It never looks at your fitness. “What pace does a 3:30 marathon need?” is its job. “Can I run 3:30?” is a question for your coach, so ask Deep Coach, which does know you.
• Mixing up units. If a pace looks mad, you've probably typed min/km into a min/mi box. Check the box labels.

Check it worked

• Every box shows a sensible number.
• The breakdown table matches your target time.