Pace calculator
Check pace and speed quickly from your distance and time.
Running Pace Calculator & Marathon Tools
Know exactly how fast you need to run to hit your goal time. Plan your pace, splits, and race strategy — all in one app.
For runners training for 10K, half marathon, and marathon.
No guessing. Just clear numbers for your next run.
Get the app and start planning your next run
Available on iOS & Android
App preview
See the core calculators runners use to plan pace, split times, and race-day decisions in seconds.
Race pace calculator
Set a goal time and review race splits before race day.
Training pace calculator
See useful training paces from easy runs to marathon pace.
Race time predictor
Estimate a realistic finish time from a recent result.
Why runners use Pace Lab
Simple tools for race planning, training decisions, and faster answers before every run.
- Calculate your perfect running pace for any distance
- Plan your race with accurate split times
- Predict your finish time from past runs
- Optimize your fueling strategy for long runs
- Train smarter with heart rate zones
Popular tools: Pace calculator, Race predictor, Split chart
Get the app and start planning your next run
Available on iOS & Android
Built to stay simple
No login required. No personal data stored. Built for runners.
What is a running pace calculator?
A running pace calculator shows exactly how fast you should run to hit your goal time.
- Calculate your pace for any distance
- Plan accurate split times
- Predict your finish time from past runs
- Train smarter with heart rate zones
Pace Lab combines all these tools in one simple app, so you can plan better and run with confidence.