Running Pace Calculator | Pace, Time & Distance

Calculate your running pace, predicted finish time, or target distance for any race

Includes training zone guidance and race presets for 5K, 10K, half...

When Should You Use This Calculator?

Calculating pace, time, or distance for day-to-day running workflows
Using race distance presets for 5K, 10K, half, and marathon efforts
Checking heart-rate training zones for a given pace and age
Tracking pace progress over time with persistent calculation history
Planning race pace strategies for marathons and 5K events

Key Features:

Solve for pace, finish time, or distance from the other two values
Race distance presets and automatic splits from 1K to marathon
Optional heart-rate training zones from age and current pace
Progress tracking for pace over time

Frequently Asked Questions

How do I calculate running pace?

Pace = Time / Distance. For example, finishing a 5K (3.1 miles) in 31 minutes gives a pace of 10:00 per mile. Lower pace numbers mean faster running. This calculator solves for pace, finish time, or distance — enter any two to find the third.

What is the difference between solving for Pace, Time, and Distance?

Choose Pace to find your pace from a known distance and time. Choose Time to find the finish time for a target distance at a given pace. Choose Distance to find how far you covered given a time and pace. All three use the same underlying formula, just solved for a different value.

How do I convert running pace to speed in mph or km/h?

Speed (mph) = 60 / Pace (min/mile). A 10:00 min/mile pace = 6 mph. Speed (km/h) = 60 / Pace (min/km). A 6:00 min/km pace = 10 km/h. This calculator reports pace, not speed — use this formula to convert manually if you need mph or km/h.

What pace should I target for my first 5K?

A common first 5K goal is to finish in 30-40 minutes, which requires a pace of roughly 9:40-12:52 min/mile (6:00-8:00 min/km). Start with a comfortable conversational pace — you should be able to speak in short sentences. Select Time as the calculation mode, use the 5K distance preset, and enter a target pace to see the resulting finish time.

Can I export my Pace Calculator calculations?

Yes. In guest mode you can export your calculations to JSON. Signing in adds PDF and CSV export. Click the export button to download your results — useful for record-keeping, sharing, or importing into other tools.

Does this calculator save my history?

Yes. Your calculation history is saved automatically. As a guest you can keep up to 50 calculations per workspace on your device. Sign in for free to keep up to 100 per workspace and access them from any device.

Is this calculator free to use?

Yes. The Pace Calculator is free to use with no sign-up required. A free account adds more calculation history, multiple workspaces, and access to your saved data from any device.

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