Running Pace Calculator

How to use this calculator

1. Enter the total distance you ran in miles (for example, 3.1, 10, 13.1, or 26.2).
2. Enter the hours, minutes, and seconds it took you to complete that distance.
3. We convert your time into total minutes and divide by the distance to get your average pace per mile.
4. We show pace as minutes and seconds per mile and also calculate your average speed in miles per hour.
5. Use the resulting pace to compare runs, set future workout targets, or estimate race goals at similar effort on similar terrain.

Inputs explained

Distance (miles)

The length of your run in miles. You can enter common race distances (5K ≈ 3.1, 10K ≈ 6.2, half marathon ≈ 13.1, marathon ≈ 26.2) or any custom distance.

Hours/Minutes/Seconds

Your total elapsed time for the run. Use the clock time from your watch, treadmill, or race results, including any brief stops if you want average pace.

When to use it

• Checking race or workout paces per mile so you can see how a recent effort compares to your training goals.
• Converting treadmill runs (which are often set in mph) into pace per mile and vice versa.
• Projecting marathon, half marathon, or 10K split times from a recent time trial at a similar distance and effort.
• Tracking improvements over time by comparing pace at similar distances and perceived effort.

Tips & cautions

• For kilometer-based pacing, convert kilometers to miles (km × 0.621371) before using this calculator, or use a dedicated km pace tool alongside it.
• Use runs on similar terrain and conditions when comparing paces—hills, heat, and trail surfaces can slow you down relative to treadmill or cool-weather road runs.
• Round your target training paces to the nearest second or treadmill increment for practical use in workouts.
• Consider using effort-based ranges (for example, easy, tempo, interval) rather than a single exact pace on every run.
• Miles-only view; you must convert kilometers to miles manually if you prefer metric training.
• Assumes even pacing across the run; real-world efforts often vary from mile to mile due to terrain, fatigue, and conditions.
• Does not account for heart rate, perceived exertion, or power, which can provide a richer picture of training load.

Worked examples

Deep dive

FAQs

Can I use this to estimate finish times from a target pace?

Yes, indirectly. Choose a target pace, multiply by your planned distance to get a target total time, and then reverse the math. Dedicated finish-time calculators can make this more convenient, but the logic is the same.

Should I pace by minutes per mile or by effort?

Both matter. Pace gives structure to workouts, but effort (RPE), heart rate, and conditions should guide how strictly you stick to a number—especially in heat, hills, or on recovery days.

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